Re: Now they shut down his voice. Is that right?
Extremely hard to prove.
Based on what I've heard 1A lawyers say, you have to be able to not only draw a direct line between a violent act to a speaker, but you have to show the speaker explicitly called for the violent act to happen in a very short time frame.
The Brandenburg Test is:
The test determined that the government may prohibit speech advocating the use of force or crime if the speech satisfies both elements of the two-part test:The speech is “directed to inciting or producing imminent lawless action,” AND
The speech is “likely to incite or produce such action.”