Demanding action on gun control, activists and elected officials took to the Brooklyn Bridge Sunday to make their voices heard.

They called for an all-out ban on assault weapons and high-capacity magazines, along with a national gun registry, which they say would help curb trafficking.

Protestors said gun control legislation needs to be passed both in Washington and in New York.

"We have to end this sick fascination with guns, and it must be done," said State Senator Eric Adams. "And we're talking about responsible gun ownership, not only for Washington D.C. but here in New York."

"Anyone who makes the argument that we're trampling on the Second Amendment, tell them they don't know what they're talking about," said Norman Siegel, a civil rights attorney.

The demonstrators also called for a focus on mental health care and emergency preparedness plans for public buildings, including schools.

Protestors at a counter-demonstration argued an armed guard would have prevented the school shooting in Connecticut.