During a town hall meeting on Saturday, Congressman Al Green played recordings of threatening voicemail messages left for him after he demanded the impeachment of President Donald Trump on the House floor earlier this week.

“You’ll be hanging from a tree,” one caller said.

The calls use graphic racial slurs, some calling Green the n-word. “You ain’t going to impeach anybody. Try it and we will lynch all of you,” said a caller.

The Houston Democrat was the first member of Congress to call for Trump’s impeachment from the House floor on Wednesday. The congressman said the firing of FBI Director James Comey is one of the reasons he’s asking for impeachment.

“It does not deter us,” Green said of the threats. “We are not going to be intimidated. We are not going to allow this to cause us to deviate from what we believe the right thing to do and that is to proceed with the impeachment of President Trump.”

At the town hall in southwest Houston, a group of about 100 people gathered to hear from the congressman. The meeting was high security, filled with police officers milling around the building. Participants were also wanded down by security officials before entering the meeting.

Green has received threatening messages from callers at his offices in Houston and Washington, said Camille Scott, a spokeswoman for him.

He said he wanted his constituents to be aware of the hateful calls he received.

“When a person talks about lynching you, we think that’s a pretty serious threat,” he said.