Parler grew slowly until early 2020, when Twitter began labeling Mr. Trump’s tweets as inaccurate and some of his supporters joined Parler in protest. After November’s election, Parler grew even more quickly as Facebook and Twitter clamped down on false claims that the vote had been rigged. So many users signed up that, at times, they overloaded the company’s systems and forced it to pause new registrations.In total, people downloaded Parler’s app more than 10 million times last year, with 80 percent in the United States, according to Sensor Tower, the app data firm.Last Wednesday, Mr. Trump …
