From the movie Gandhi (1982). — See the raid on the Dharasana Salt Works.

When Santa Claus and elves tried to deliver a piece of coal to the Prime Minister of Canada last December, the tactic they used was the nonviolent raid. In a nonviolent raid, committed and well-trained actionists attempt to enter a protected facility to seize it, or to carry out some legitimate task consistent with their goals. 

The nonviolent raiders are seen advancing. They seek to enter the facility. But fences, barricades or police lines are there to block them. They proceed nonetheless. Most often than not, they are stopped through some form of repression, with arrests usually. But they still win.