Complex sentence: The Derby Lunatic Fringe (DLF) is a hooligan firm that has been active in Derby, England since the early 1970s, which began as small gangs of violent skinheads, usually under the influence of drugs and or alcohol.
Split into simpler sentences: The Derby Lunatic Fringe (DLF) is a hooligan firm that has been active in Derby, England since the early 1970s. The DLF began as small gangs of violent skinheads, usually under the influence of drugs and or alcohol.