President Trump on Monday escalated a feud with a veteran Democratic lawmaker who called for aggressive protests of administration officials, warning Rep. Maxine Waters of California to “Be careful what you wish for Max!” even as leaders in both parties cautioned against increasingly caustic political rhetoric.

Trump’s message, conveyed on Twitter, stood in sharp contrast to a call for civility by White House press secretary Sarah Huckabee Sanders, whose ouster from a Virginia restaurant sparked a furious debate over whether opponents should take out their political frustrations against administration officials in their private lives.WP