"Let it be known, I will do all in my power to prevent this from happening in our State", he promised.
"Now that everyone can see MS state Rep. Oliver's position on the matter clearly, his message proves our fight to tackle the issue of race head-on is both right and necessary", Landrieu said.
Numerous Democratic state lawmakers spoke out against Oliver's comments.
Karl Oliver learned of New Orleans' successful effort to remove Confederate monuments from public spaces, and the Republican lawmaker wanted to do one thing to the people responsible: lynch them.
"They do not reflect the views of the Republican party, the leadership of the House of Representatives or the House as a whole".
Additionally, Sen. Sollie B. Norwood, D-Jackson, believes Oliver's said what he meant in his original post.
Mississippi State Representative Karl Oliver's Facebook page is getting a lot of attention after a recent post.
"Calling for a lynching, calling for everyone involved to be hanged, is inciting the murder of American citizens, and that's a crime that ought to be prosecuted", Gray said Monday.More news: Startling video shows sea lion snatching girl from pier
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"I commend Louisiana's leaders for taking the fearless stance to remove the offensive monuments from public areas in their city", she added.
Last Friday, the statue of Confederate Gen. Robert E. Lee was the fourth and last Confederate monument in Louisiana to be removed.
A MS lawmaker is saying Louisiana leaders should be "lynched" for removing Confederate monuments. The removal of New Orleans' controversial monuments has been part of a nationwide debate over Confederate symbols.
On Monday, Oliver was not reachable at his office in the Mississippi State Capitol and did not immediately respond to questions sent by email.
Mississippi Gov. Phil Bryant and House Speaker Philip Gunn, also Republicans, issued statements Monday condemning Oliver's post.
Rep. Sonya Williams-Barnesof Gulfport, chairwoman of the state Legislative Black Caucus, said Oliver's apology "is not enough". He called on Oliver to apologize.
And Democratic state Rep. Chris Bell said he was "angered beyond words" by Oliver's "inflammatory remarks", according to an image by Mississippi News Now of a Facebook post that was not publicly visible.