It's hard to take Sen. Elizabeth Warren's, D-Mass., lectures about corporate special interests seriously when she's pocketing cash from a wealthy Bain Capital executive.

According to the Washington Free Beacon, the Warren re-election campaign's latest Federal Election Commission report shows she received a $5,400 donation from Jonathan Lavine, co-managing partner at Bain Capital and chief investment officer at Bain Capital Credit. The private equity firm is headquartered in Boston. Lavine's wife also reportedly contributed $5,400 to Warren.

The Free Beacon points out another noteworthy contribution on Warren's FEC report, this time from Larry Rasky, the head of a powerful lobbying firm in the senator's state. The Boston Globe described Rasky Partners earlier this year as "one of the busiest lobbying firms in Massachusetts." Rasky and his wife each contributed $5,400 to Warren's campaign.

Warren has worked to cultivate a reputation for opposing money in politics. In a January 2016 speech on the Senate floor, she lamented how "Washington works just great for a handful of wealthy individuals and powerful corporations that manipulate the system to benefit themselves."

"It works great for the lobbyists and lawyers who slither around Washington day in and day out, handsomely paid to troll for special deals for those who pay them," Warren continued.

Perhaps she should stop letting them slither into her campaign coffers.