MSNBC host Lawrence O'Donnell informed Irish-Americans on St. Patrick's Day that they were betraying their heritage if they worked for President Donald Trump.

O'Donnell, who is an Irish-American, tweeted out on Friday that, "The Irish-Americans working for Trump disgrace their heritage."

The Irish-Americans working for Trump disgrace their heritage. via @nytimes https://t.co/rbSSnq3QSk — Lawrence O'Donnell (@Lawrence) March 17, 2017

O'Donnell's tweet links to an op-ed from the New York Times shaming the Trump administration's Irish-Americans employees for being insufficiently empathic towards to the plight of immigrants.

"We Irish are not Know Nothings. We know something important: what it’s like to be feared, to be discriminated against, to be stereotyped," wrote columnist Fintan O’Toole.

Among the notable Irish-Americans working for Trump are Vice President Mike Pence, White House counselor Kellyanne Conway, and chief strategist Steve Bannon.