By Nathan Layne BLAINE, Minnesota (Reuters) -From the pulpit on Sunday, Father Joe Whalen exhorted his parishioners to avoid the kind of extreme partisanship and hate that appeared to be behind the killing of one of the church's own,

A manhunt is underway for the gunman who was impersonating a police officer and had a list of possible targets, officials said.

The United States has a long and grim history of political violence, from presidential assassinations to lynchings and violence aimed at Black people in

Investigators found a cowboy hat near the vehicle and were working to determine whether it belongs to Boelter.

Rep. Kelly Morrison of Minnesota joins The Weekend to discuss the murder of her former colleague in the Minnesota state house Melissa Hortman and the chilling impact of the politically motivated attack.

The attacks on two Democratic Minnesota state lawmakers at their homes are the latest in a grim and alarming surge of U.S. political violence.

Republicans and Democrats said Saturday's killings in Minnesota were a chilling reminder of the threats they receive regularly.

Authorities are on the second day of the hunt for a man suspected of killing Minnesota State Rep. Melissa Hortman and her husband at their house. The suspect also is believed to have shot State Sen. John Hoffman and his wife in their home.