OH, for heavens sake Gloranny try reading posts and understanding them. No where did I suggest that being anti semitic was homophobic.
I was talking about demonstrations and mobs in general, whether they are anti-semitic, homophobic, demonstrating against cutting down trees, the closing of a school or the demise of a fish and chip shop.
When a large group of people get together to demonstrate against anything, even though all are essentially peaceful, there will always be a small group of people who join because they enjoy and want violence. The large group then takes on a personality of its own, quite separate from that of the individuals - and that is often an aggressive personality.
Look at reports of demonstrations all over the world and you see the dynamic, a large peaceful demonstration and then, spontaneously sometimes, or triggered by opposing groups, or forces of law and order, fighting starts, do all the demostrators scatter and go, no fighting starts, then vandalism, and if there are any opposing groups fights between them start. Then mobviolence takes over and ostensible peaceful demonstrators get drawn in.