A: First, free speech is not unlimited. U.S. Supreme Court had something to say about it at least once. Inciting hate, violence has no place in 21st century. We are not cave man barbarians, folks. Second, while twitter duly blocks nazi accounts in Europe it repeatedly fails to do so in USA, despite numerous customer complaints. Third, you may freely block each account you don't like one by one, but why if you can do this in bulk?
Q: How does it work?
A: Bulk block works by importing a text file with id numbers of account you want to block from your twitter account settings page. Such functionality has been there for ages but not many knew about it. You have to download this file first. Here is our page with files to import.
Q: I'm in! How do I do this?
A: Step by step instruction is already provided by twitter:
You can read entire article here: https://support.twitter.com/articles/20172663#
Q: How do I know who am I blocking?
A: Very good question! Yes, the imported file contains only numbers. These numbers are identifiers Twitter uses internally to recognize every account. You can check twitter handle to twitter id and vice versa conversion here: https://tweeterid.com/
