Story highlights Capitol Hill police acknowledged Monday they're investigating threats against Al Green

Several racist threats came in following calls Green made for Donald Trump's impeachment

WARNING: This story contains offensive language.

(CNN) Rep. Al Green confirmed Monday that officials are investigating threats of lynching he's received since he called for President Donald Trump's impeachment.

"We are hopeful there will be a prosecution," the Texas Democrat told CNN's Brooke Baldwin. "Lynching is murder. People make these threats and we need to expose them."

Green -- who is black -- played recordings at a town hall on Saturday of explicit, racially-charged voicemails he received following his call to impeach Trump

The lawmaker said while it was not an easy decision to share the threats he received, it was a "necessary one."

"You cannot hide hate," he said on CNN. "You have to confront hate. ... It's unfortunate many African-Americans have to live knowing they can be threatened with lynching."

"Unfortunate many African Americans have to live knowing they can be threatened with lynching"- @RepAlGreen https://t.co/ErjIFLngo1 — Brooke Baldwin (@BrookeBCNN) May 22, 2017

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