Great Depression and Aftermath Cold War New Left Contemporary Active Historical Solidarity is a Trotskyist organisation in Australia.

[5] A faction fight beginning in 1993 led to the expulsion of leading ISO members in 1995, mainly but not exclusively in Melbourne, who went on to form Socialist Alternative (SA).

[citation needed] The organisation's main priority from 2003 was to build opposition to the Iraq War and oppose the Australian government's involvement.

[citation needed] The conference was the culmination of a speaking tour of the US anti-war activist Cindy Sheehan and Salem Ismael from Doctors for Iraq and was attended by approximately 60 organisations and attracted 350 people.

Rintoul controversially described Australian Prime Minister Julia Gillard as a "racist" in response to the announcement of the Malaysia solution.

[16] Along with Mark Goudkamp, Sunil Menon, Peter Murphy and John Morris, Ian Rintoul's house was raided by the Australian Federal Police in 2004 in relation to allegations of aiding refugees to obtain "false passports" to avoid deportation.

In 2012, Solidarity student members at the University of Sydney actively participated in a mass campaign against proposed staff cuts, playing a central role in initiating the Education Action Group.

[citation needed] The group has also been involved in a campaign to prevent rent-increases at the Sydney University Village (SUV), the campus student housing provider.

[citation needed] The Stop the Intervention Collective has been involved in campaigning against income management, and calling for jobs with justice for Aboriginal people.

[19] Solidarity member Paddy Gibson is a spokesperson for the Stop the Intervention Collective and a researcher with the Jumbunna Institute of Learning at UTS.

The tendency originated with the ideas of Tony Cliff, who split from orthodox Trotskyism by developing a state capitalist critique of the Soviet Union.

They hold that the united front is a strategy informing basic assumptions about relating to reformist forces, not an organisational tactic that can be selectively applied.

Solidarity claims to stand up for Muslims and Middle Eastern people against the rise in anti-Muslim racism[29][30] they see as associated with the War on Terror.