Sometimes you need to block a lot of bigots —promptly— and megablock doesn't always work. Here's a quick & dirty way to do it.
You'll need to create a developer app on Twitter. Follow the steps here: https://developer.twitter.com/en/apps
You'll also need python3 on your system, which should already be present if you use any flavor of Linux or macOS. If you're using Windows, you can follow the installation steps here: https://docs.python.org/3/using/windows.html