Anti-gay marriage activists hold flags and banners as they take part in a demonstration of the anti-gay marriage movement “La Manif Pour Tous” (Demonstration for all!) on April 21, 2013 in Paris. Tens of thousands of opponents of a gay marriage bill were due to converge on Paris today in a last-ditch bid to block the legislation, under the watchful eye of police after recent violence. The demonstration tops days of sometimes vicious protests and several homophobic assaults in France, as parliament prepares to vote on — and likely pass — the bill , making France the 14th country to legalise same-sex marriage. AFP PHOTO / KENZO TRIBOUILLARD