Looks like they were raising money using some candidates and then taking the money to back others like Ocasio-Cortez.
Via NY Post:
A controversial political action committee that helped propel Alexandria Ocasio-Cortez to her stunning victory in Congress, has come under fire from some of the other progressive Democrats who sought its support.
David Hildebrand, who was committed to running a grassroots campaign against incumbent Sen. Dianne Feinstein in California, sought out the group which was also helping dozens of other progressives in elections across the country last year.
But after an interview with Justice Democrats, Hildebrand said they muscled him out of the race, choosing a female candidate to run in last June’s primary against Feinstein.
“I had support in my community and was nominated by many people,” he told The Post.