Frenzal Rhomb

Context: During 2003, Frenzal Rhomb's McDougall organised Rock Against Howard, a compilation album, by various Australian musicians as a protest against incumbent Prime Minister John Howard's government. It was released in August 2004, before the October federal election, when Howard's coalition was re-elected.  In July 2004, radio station 2Day FM presenter Jackie O was to MC at the Bassinthegrass festival in Darwin. Jackie allegedly arrived late, causing Frenzal Rhomb to cut their setlist short by several songs. She attempted to speak with the audience. In protest, McDougall began playing AC/DC's "Thunderstruck" over her voice. Jackie was upset that she was unable to finish her announcement to the audience. Whalley later accused her and other music industry personalities of pushing original Australian bands aside to make way for short-term marketable acts such as Australian Idol and Popstars contestants.  Jackie and her co-presenter, Kyle Sandilands, called Whalley on air during their next breakfast show. Whalley apologised for offending Jackie, but stood by his claims regarding the music industry. The conversation became heated as Sandilands told Whalley "Your songs being played on this network or the Triple M network... it's just not going to happen now"; to which Whalley argued that Frenzal Rhomb were almost never played on the Austereo network anyway. During the conversation, Sandilands told Whalley that he was bitter and sad. When Whalley pointed out that Sandilands is in a position to promote new Australian music but doesn't, Sandilands countered that Frenzal Rhomb is not played on the network "because it's pretty much shit". While Sandilands agreed that shows like Popstars and Australian Idol are interested in making "a quick buck", he also asserted that he doesn't "care about Australian Idol or Popstars".  Sandilands argued that Whalley should not "pick fights with people that are female in the Northern Territory". Sandilands asserted that if he himself were present, "it would have been on for young and old". Whalley argued that gender was irrelevant to the issue, and in response to Sandilands' threat of violence asked Jackie if she was aware that her security guard had threatened a band technician with violence. Sandilands said he endorsed the threat of violence. Sandilands argued to Whalley that he has to "get over it" when Whalley recommended that radio DJs should promote original Australian music. In reply, Sandilands insinuated that Frenzal Rhomb, and bands in general, suffer from a lack of support because they are not "putting [their] stuff in front of the right people".  ABC Television's Media Watch covered the exchange and presenter David Marr raised concerns about the interview: "Kyle and Jackie O are also part of a new generation of radio thugs". Patrick Joyce, general manager of Austereo in Sydney, responded to Sandilands' threats of black listing and violence, "Music content is decided by the programming directors based on research of the market... Austereo does not approve of threats being made to anyone... We have fully canvassed these issues with Kyle". CANNOTANSWER

Question: what political protest did Frenzal Rhomb and Jackie O participate in?
Answer: protest against incumbent Prime Minister John Howard's government.