I assume you mean Citizens United v FEC. Should they not have been allowed to release their documentary? Its not an easy question and there's a reason none of the dissents directly address Roberts' opinion.
https://rooseveltinstitute.org/publications/15-years-after-c...
No analysis if the politician was acting against their constituents interests... Pretty embarrassing paper to put their name on. I can see why there's no coauthors.
Also they conflate political ad spending with issue awareness ad spending, which is a borderline malicious.