Question: The Norman Conks (or Norman Conquerors) were a large Catholic sectarian street gang active in Glasgow, they were often involved in street fighting with which Protestant group, from Bridgeton, and is also a loyalist song, with a title of its same name, from Glasgow?

Context paragraphs:
Potashes (gang): The Potashes were a 19th-century Irish-American street gang active in Greenwich Village and the New York waterfront during the early to mid-1890s.  One of the many to rise in New York City during the "Gay Nineties"-period, the gang was led by Red Shay Meehan and based near the Babbit Soap Factory on Washington Street (hence their name) near present-day Rector Street.

John Weir (loyalist): John Oliver Weir (born 1950) is an Ulster loyalist born in the Republic of Ireland.  He served as an officer in Northern Ireland's Royal Ulster Constabulary's (RUC) Special Patrol Group (SPG) (a tactical reserve unit), and was a volunteer in the illegal Ulster Volunteer Force (UVF).  As a member of the UVF's Mid-Ulster Brigade led by Robin "the Jackal" Jackson, Weir was a part of the Glenanne gang, a group of loyalist extremists that carried out sectarian attacks mainly in the County Armagh area in the mid-1970s.  Along with his RUC colleague Billy McCaughey, Weir was convicted of the 1977 sectarian killing of Catholic chemist William Strathern and sentenced to life imprisonment.  Weir's affidavit which implicated Jackson, other members of the Glenanne gang, soldiers of the Ulster Defence Regiment (UDR), and his colleagues in the RUC and SPG, in a series of sectarian attacks, including the Dublin and Monaghan bombings, was published in the 2003 Barron Report, the findings of an official investigation into the 1974 car bombings commissioned by Irish Supreme Court Justice Henry Barron.

Billy Boys: "Billy Boys", also titled "The Billy Boys", is a loyalist song from Glasgow, sung to the tune of "Marching Through Georgia."  It originated in the 1930s as the signature song of one of the Glasgow razor gangs led by Billy Fullerton and later became viewed to reflect the long running sectarian divide in the city.  It is associated in particular with Rangers F.C..

Shankill Butchers: The Shankill Butchers was an Ulster loyalist gang—many of whom were members of the Ulster Volunteer Force (UVF)—that was active between 1975 and 1982 in Belfast, Northern Ireland.  It was based in the Shankill area and was responsible for the deaths of at least 23 people, most of whom were killed in sectarian attacks.  The gang was notorious for kidnapping and murdering random Catholic and suspected Catholic civilians; each was beaten ferociously and had his throat hacked with a butcher's knife.  Some were also tortured and attacked with a hatchet.  The gang also killed six Ulster Protestants over personal disputes, and two other Protestants mistaken for Catholics.  Most of the gang were eventually caught and, in February 1979, received the longest combined prison sentences in United Kingdom legal history.  However, gang leader Lenny Murphy and his two chief "lieutenants" escaped prosecution.  Murphy was killed in November 1982 by the Provisional IRA, likely acting with loyalist paramilitaries who perceived him as a threat.  The Butchers brought a new level of paramilitary violence to a country already hardened by death and destruction.  The judge who oversaw the 1979 trial described their crimes as "a lasting monument to blind sectarian bigotry".

Boodle Gang: The Boodle Gang was an American street gang active in New York City during the mid-to- late 19th century.  The gang were notorious "butcher cart thieves" during the 1850s and their hijacking methods would later be used by criminals of the early twentieth century.

Orange Order: The Loyal Orange Institution, more commonly known as the Orange Order, is a Protestant fraternal organisation based primarily in Northern Ireland.  It also has a significant presence in the Scottish Lowlands and lodges throughout the Commonwealth, as well as in the United States and Togo.  The Orange Order was founded in County Armagh in 1795, during a period of Protestant–Catholic sectarian conflict, as a Masonic-style brotherhood sworn to maintain the Protestant Ascendancy.  It is headed by the Grand Orange Lodge of Ireland, which was established in 1798.  Its name is a tribute to the Dutch-born Protestant king William of Orange, who defeated the army of Catholic king James II in the Williamite–Jacobite War (16881691).  Its members wear orange sashes and are referred to as Orangemen.  The Order is best known for its yearly marches, the biggest of which are held on or around 12 July ('The Twelfth').

Norman Conks: The Norman Conks (or Norman Conquerors) were a large Catholic sectarian street gang active in Glasgow.  It was one of the popular Glasgow razor gangs, and was active from the 1880s to the 1960s, with its headquarters and most of their members based about the Catholic area of Norman Street in Bridgeton.  They were initially a penny mob, but evolved into a larger, influential gang.  They were often involved in street fighting with the Protestant Billy Boys of Bridgeton.  The gang included girls.

Bloody Sunday (1921): Bloody Sunday or Belfast's Bloody Sunday was a day of violence in Belfast, Ireland (present-day Northern Ireland) on 10 July 1921, during the Irish War of Independence.  In retaliation for an Irish Republican Army (IRA) ambush of a police raiding party, Protestant loyalists attacked Catholic enclaves, burning homes and businesses.  This sparked gun battles between republican and loyalist paramilitaries, and street fighting between Catholics and Protestants.  There was also shooting between republicans and police, and it is claimed that some police patrols fired indiscriminately at Catholic civilians.  Seventeen people were killed on 10 July, and a further eleven were killed or fatally wounded over the following week.  At least 100 people were injured.  About 200 houses were badly damaged or destroyed, leaving 1,000 people homeless.  The violence took place just before a truce came into effect, which ended the war in most of Ireland.

Penny Mobs: The Penny Mobs was the names used by the press to describe the early street gang active in Glasgow, Scotland, during the early 1870s.  As the court system offered heavy fines as an alternative to imprisonment, gang members were often freed after a collection from the gang at a ""penny a head"" thus earning its name.

Crazy Butch Gang: The Crazy Butch Gang was an American juvenile street gang active in the New York City underworld during the late nineteenth century.  Largely active in Manhattan's Lower East Side, the group were widely known as the cities top pickpockets and sneak thieves during the "Gay Nineties" period.  An early member of this gang would later become known as a prominent New York gangster Jack Zelig.

Supporting paragraphs: Norman Conks Billy Boys
Answer: Billy Boys