Good lord. Why would you do such a thing?
Because he cheated on you?
That's a shitty thing he did, no doubt about it.
So you then went on some social media thing, look up your ex (because that's what happened right? You went looking for him. He didn't pop up on Google after searching for cute cat pictures.) Got yourself all riled up, then decided to exact revenge by attempting (and very possibly succeeding) to permanently damage this man's reputation and livelihood.
And this all took place a full 4 months after the relationship ended? This wasn't a week later, but months. You went looking for him on a social media thing, 4 months after the fact.
You know, in the country I was born in. We don't have free speech laws like you do in the US.
racist vents about my ex's boss and co-workers
This. Besides being all of the bad things people above have already said. This, would have easily gotten him arrested and charged with a crime.
Then you come here bragging about how you screwed this guy over, because you
choose to vent your anxiety as rage?
As if that would somehow make it ok. I'm sorry you had to live through a relationship that subjected you to domestic violence, but infidelity, is not domestic violence. What you have done here is totally unacceptable.
I hope one day you get to place of mental health, that let's you understand this.