Hundreds of Twitter workers resigned Thursday after rejecting new owner Elon Musk’s one-day ultimatum to go “extremely hard core” or leave with three months’ severance pay. Twitter has closed its doors until Monday as it figures out which former workers it now needs to cut access for, and amid rumors Musk is worried about internal sabotage at the company. Musk reportedly met with some employees in hopes of convincing them to stay. The hashtag #RIPTwitter began trending on Twitter. On Thursday night, a light projection on Twitter’s San Francisco headquarters trolled Elon Musk with the words “bankruptcy baby,” “apartheid profiteer” and “space Karen,” among other insults.