Neil Heslin, whose 6-year-old son was among the 20 children gunned down by Adam Lanza in a Connecticut elementary school classroom last month, went to the Connecticut state legislature today to call for new laws to keep high-powered weapons out of the hands of maniacs.

But several pro-gun enthusiasts in the audience could not restrain themselves from shouting over his remarks as he called for a ban on military-style assault weapons like the Bushmaster semi-automatic rifle that killed his son, according to Ken Dixon of the Hartford Courant.

A tearful Heslin asked lawmakers why assault weapons like the Bushmaster were being sold in the state, Dixon reports.

"The Second Amendment!" the gun enthusiasts shouted from behind.