Agree with 🐻 as well.
Deliberate goading is a normal part of everyday life - I'm constantly teasing & winding people up - but it's typically done in a good natured way with no malicious intent.
Threats of violence & ultimately acts of violence do not spring from a vacuum - there is background & context to all.
As with abusive relationships, it starts with words & provocative actions & escalates over time.
Wrt discourse on a population level (eg politics) it is no different.
People are pissed off or upset, they lash out verbally - perfectly understandable.
However, when these upset people find others 'just like them' they find reassurance & are able to rationalise & justify their feelings because they are reassured that they're not alone.
Echo chambers become prevalent & people become further entrenched in their in-group & feel comfortable with the 'us & them' narrative - this leads to further comfort that they're 'in the right' or one the right side' at least.
Discourse becomes more entrenched & increasingly polarised & so the slippery slope to violent words & then ultimately violent actions is set.
There's tonnes of psych & soc research on this as it's a well known pattern & path to radicalisation - I cant think off the top of my head of any handy links at the mo but will have a root about later maybe.
Something that's pricking my mind is '7 steps to terrorism' or something like that but I can't honestly remember the specifics without looking for it.