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Journalists flock to Bluesky as X becomes increasingly 'toxic'
(www.nbcnews.com)
This is a most excellent place for technology news and articles.
The definition as taken to the courts in the USA is:
"Hate speech is any form of expression through which speakers intend to vilify, humiliate, or incite hatred against a group or a class of persons on the basis of race, religion, skin color, sexual identity, gender identity, ethnicity, disability, or national origin."
It has more rigorous legal definitions in many other jurisdictions where hate speech is explicitly illegal.
https://laws-lois.justice.gc.ca/eng/acts/c-46/section-319.html
Canada for example.
You characterizing toxicity and hate speech as being related isn't a position taken even remotely seriously by anyone who actually write laws on the subject, and many have been written across the world.
Broadly speaking, hate speech isn't "being mean" in any legal definition... But that is what right-wing talking heads like to strawman it as.