BURLINGTON, Vt. —  Images of naked Playboy models and cartoons of self-mutilation on Burton snowboards are continuing to draw protests.

About 100 people gathered at midday Thursday outside the Burton headquarters in Burlington to demand that the two lines of snowboards be pulled from the market.

Women's groups and a group of men working against domestic violence have joined a growing chorus of criticism directed at the snowboards.

Two community groups have withdrawn their participation in a Burton-sponsored program to introduce disadvantaged kids to snowboarding.

The company is standing by the two snowboard lines, saying it's a matter of free expression.