Josh Shapiro of Pennsylvania was struggling with the emotional toll of political violence. The Republican president was asked during a Friday appearance on Fox News if he would cancel any public appearances of his own. “It means you can’t win a political argument.”And yet political violence is becoming more frequent in the United States. The Republican president highlighted only attacks against Republicans during his Oval Office address on Thursday and blamed “the radical left” for Kirk's shooting, even before the suspect was arrested. “To be clear, the political violence has impacted Democrats and Republicans, and the rhetoric of vengeance and the language that has created division has come from both sides of the political divide,” Shapiro said.