Threats and violent acts have become part of the political landscape, still shocking but somehow not so surprising.

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,

The shootings of two Minnesota lawmakers and their spouses over the weekend highlights the rise in political violence that's been seen in the U.S. over the past five years. CBS News congressional correspondent Nikole Killion reports.