Two union leaders and longtime Democratic National Committee members have resigned from the national party, marking the latest internal dispute of chairman Ken Martin’s tenure.

The Democratic Party faces new turmoil as top labor union presidents exit DNC, citing concerns about party leadership direction in a resignation letter to Chair Ken Martin.

The Republican senator from Utah suggested in social media posts that the killings were the work of “Marxists,” and mocked Minnesota’s Democratic governor. He later issued a more sober condemnation of the violence.

Sen. Amy Klobuchar (D-Minn.) on Monday condemned social media posts from her colleague Sen. Mike Lee (R-Utah) spreading unfounded claims about the man suspected of killing a Minnesota Democratic lawmaker and her husband Saturday morning.

Utah Sen. Mike Lee is facing criticism after posting what appear to be jokes about the man police believe shot and killed a Minnesota lawmaker and her husband Saturday.