Capitol Hill clash highlights America's gun divide.

A heated discussion over gun control between Rep. Jamaal Bowman (D-N.Y.) and Rep. Thomas Massie (R-Ky.) turned into a shouting match in a hallway outside the House chamber. The verbal brawl comes amid national disagreement over how to reduce school shootings, as the nation mourns the deaths of six people from the shooting at Nashville’s Covenant School. Democrats have proposed a bill to boost research aimed at finding out the causes of gun violence, while Republicans have expressed reluctance to support more firearm restrictions.