Democrats in the state House expect to introduce a resolution today asking lawmakers to join a nationwide boycott of a new video game that rewards players who kill cops. The game, which was released to U.S. markets in January, pits criminals against police officers. Players may select the role of either side and can use as many as 40 different weapons, including a variety of pistols, assault rifles and a rocket launcher in addition to knives and hammers. Democrats say they will introduce a resolution asking House and Senate lawmakers to support a boycott of the game. The distinction between banning and boycotting can invite complications, said Robert Sedler, a professor of constitutional law at Wayne State University . \"Once the government starts prohibiting the sale by law, including to minors, that raises serious First Amendment questions,\" he said. \"That\'s why these laws get into troubles.\"