Tesla CEO Elon Musk’s $44 billion deal to buy Twitter Monday met mixed reactions as observers speculated how digital speech on the service might change under his leadership. Musk, a prolific Twitter user who has criticized Twitter’s management in tweets, said in the press release Monday announcing the deal that “Twitter is the digital town square where matters vital to the future of humanity are debated.” Musk’s takeover of Twitter was applauded by some U.S. conservatives who have alleged that internet firms — including Twitter — promote a liberal political agenda and suppress conservative voices. Senator Ted Cruz, a Republican from Texas, tweeted that it’s “amazing to watch the Left panic at the prospect of free speech on Twitter.” But others expressed concern that Musk’s takeover would mean less moderation of hate speech and misinformation on the site. Sumayyah Waheed, senior policy counsel with Muslim Advocates, a national …