They were deliberately insulting people and trying to provoke a violent response.
Actually, it wasn't a normal Orange March, I was going to post this sooner, but thunder got in the way:
"Love Ulster is an umbrella Northern Ireland unionist victims' group.
It is composed of a number of victims' organisations, such as Families Acting for Innocent Relatives (FAIR), Women Raising Unionist Concerns, the Orange Order and other loyalist fraternities and activists."
Another point:
"On Saturday 25th February 2006, a planned Love Ulster march in Dublin City was prevented from taking place due to republican riots."