Under the circumstances and based on what we know so far. Do you think it's possible that the Charlie Kirk assassination is an indication some of his speeches may have exceeded this threshold? Violence did occur and it was the perceived spreading of hate that apparently motivated the suspect in custody.
Hate speech is a term with varied meaning and has no single, consistent definition. Cambridge Dictionary defines hate speech as "public speech that expresses hate or encourages violence towards a person or group based on something such as race, religion, sex, or sexual orientation"