A statement from the ACLU:
You’d be hard-pressed to find a more steadfast opponent of Trump and his policies than the ACLU, but Elon Musk’s decision to re-platform President Trump is the right call. When a handful of individuals possess so much power over the most important forums for political speech, they should exercise that power with restraint. If Trump violates the platform rules again, Twitter should first employ lesser penalties like removing the offending post—rather than banning a political figure.
Like it or not, President Trump is one of the most important political figures in this country, and the public has a strong interest in hearing his speech. Indeed, some of Trump’s most offensive tweets ended up being critical evidence in lawsuits filed against him and his administration. And we should know—we filed over 400 legal actions against him.