US states take precautions over concerns of political violence - Americans are more worried about political violence under Trump - Georgia Secretary of State examines threat of political violence in U.S. - Trump targeted again: How violent is US politics? - Trump shooting is latest in 'very long' global wave of political violence - The Only Kind of "Political Violence" All U.S. Politicians Oppose - FACT FOCUS: Heritage Foundation leader wrong to say most political violence is committed by the left - Opinion: Too many Americans support political violence. It's up to the rest of us to dissuade them - Biden urges Americans to shun political violence day after Trump assassination attempt - Trump rally shooting draws attention to concerns about political violence