Justice Democrats have launched a “DCCC blacklist” website, escalating a feud between progressive groups and the Democratic Congressional Campaign Committee over its rule banning political vendors from securing DCCC contracts if they work with Democratic primary challengers.

“The movement is building a network of alternative infrastructure to help progressive primary candidates like @AOC and @AyannaPressley win their next race,” tweeted Justice Democrats, a PAC closely connected with Rep. Alexandria Ocasio-Cortez, D-N.Y., that supported her successful primary campaign against Rep. Joseph Crowley, D-N.Y.