At a time when many countries are becoming more critical of Israel's policies, Canada seems to be moving in the opposite direction. A general reluctance to engage in open debate about the Palestinian issue is exacerbated by pro-Israel groups' efforts to shut down discussion and the federal government's unprecedented penchant for defending Israeli actions.

Since the beginning of 2010, the federal government has systematically cut funding to Arab-Canadian organisations and to UN relief works in Gaza. In March, the Ontario provincial legislature issued a unanimous condemnation of Israeli Apartheid Week, while the federal government considered introducing a similar motion.

However, self-censorship reached new heights last month when Toronto's Pride Committee – which organises one of the world's largest gay pride celebrations – announced it would be banning use of the term "Israeli apartheid" at the festivities.

Pride week in Toronto is a loud and highly visible public event, with a long tradition of activists linking their own campaigns for sexual rights to other struggles for liberation and social justice; however, this year the organisers caved in to pressure from pro-Israel groups and Toronto city council.

The main effect of the decision is to bar one group in particular – Queers Against Israeli Apartheid (QuAIA) – who have marched in the parade since 2008.

The reason given is that the phrase "Israeli apartheid" violates Toronto's anti-discrimination policy. But when asked, neither Pride Toronto nor Giorgio Mammoliti – the Toronto city councillor mainly involved – could explain in detail what was discriminatory about describing Israel's privileging of its Jewish citizens over others as a form or racism and apartheid.

"It's absolutely bizarre the way they are trying to use the language around diversity and inclusiveness to exclude people," QuAIA activist Tim McCaskell told me. "It was so 1984."

Accompanying the onset of a Canadian McCarthyism dressed up as anti-discrimination, the mainstream left in Canada has been unwilling to take a clear political and moral stance on Palestine. Instead it has sought the approach of least resistance, trying to appease rather than take a stand against the silencing of Palestinian voices in Canada and Israel.

Writing in NOW Magazine, a progressive Toronto weekly newspaper, news editor Ellie Kirzner contended that Palestinians and their supporters should simply drop the term "apartheid". "It's a vulnerability the movement doesn't need," she wrote.

McCaskell, on the other hand, says QuAIA is bringing the fight against Israeli apartheid to pride because that is what Palestinian LGBT organisations have requested, and because Israel tries to present itself as queer-tolerant in an attempt to distract from its ill-treatment of Palestinians.

The two Palestinian LGBT groups, Aswat and al-Qaws (both based in Israel), issued a joint statement saying: "Pride parades started as political marches, and we firmly believe that solidarity should be with human rights first and foremost." They continued:

We believe that as queers, one of the most disadvantaged and oppressed minorities in human societies, we should protest against all forms of oppression and struggle together to promote the rights of minorities and oppressed groups. As Palestinian queers, our struggle relates to social injustices caused by the discrimination that is deeply rooted in Israel's policies and practices against the Palestinian people, straight and gay alike ... Over the past decades, Pride parades around the world have been a platform for queers, not only to increase public awareness for [LGBT] rights, but also a platform to promote and defend causes like the feminist struggle, and the fight to end apartheid in South Africa.

Trying to smother this debate in relation to Israel at Toronto pride could easily backfire, according to Ayala Shani, a queer activist with the Boycott, Divestment and Sanctions campaign. She points out that banning a term will only multiply its use and adds: "We are expecting to see 'Israeli apartheid' written and spoken all over pride parades around the world, including a parade in Tel Aviv."

However, with the Canadian mainstream left dodging defence of Palestinians and the country at large continuing its polite silence on the Middle East, Toronto's establishment may be taking more pride in silencing discussion of Israeli apartheid than even Tel Aviv.