President Donald Trump’s shocking call Thursday for members of Congress to be executed was met with immediate, and explicit, pushback from Sen. Chris Murphy (D-Conn.), who sounded the horn for every “person of influence” to repudiate the president’s call for violence.

“The president of the United States just called for members of Congress to be executed,” Murphy said in a fiery video statement. “If you are a person of influence in this country, maybe it’s time to pick a fucking side.”

Murphy specifically called on Republicans to show some spine, saying:

“If you are a Republican in Congress, if you are a Republican governor, maybe it’s time to draw a line in the sand and say that under no circumstances should the president of the United States be calling on his political opposition to be hanged.”

“We are at a very dangerous moment right now,” Murphy said in closing. “The president is engaged in the wholesale incitement, endorsement and rationalization of political violence in this country.