Trump rally shooting raises concerns of political violence. Here's a look at past attacks against U.S. presidents and candidates.
CBSN
A shooting at a Pennsylvania rally on Saturday that injured former President Donald Trump has heightened concerns about political violence and increased awareness of past attacks and assassination attempts against presidents and candidates.
In a social media post shared on Saturday night, Trump thanked law enforcement officials for their quick actions after he was "shot with a bullet that pierced the upper part of my right ear."
The Butler County district attorney confirms to CBS Pittsburgh station KDKA that two people are dead — the gunman and an audience member. Two law enforcement sources told CBS News the gunman was killed by a Secret Service sniper. Two other attendees are in critical condition.

The Trump administration deployed ICE and other Homeland Security agents to 14 of the nation's airports on Monday to help shuttle passengers through overcrowded TSA checkpoints. In one airport, the security line wait-time was up to six hours. Nicole Sganga and Kaia Hubbard contributed to this report. In:












