Part of the explanation exonerating this guy is that the mascot's name sounds similar when yelled in a stadium filled with elevens of Rockies fans. That's kinda an acknowledgement that it was a reasonable mistake on the part of the original accuser(s). Did it assume the worst? Absolutely, but y'all wouldn't think twice about a home owner answering their door with a gun (nor would I), so let's not get into judging who does and doesn't have a good reason to be on guard against potential threats.
So on the bold, I really don't think this is the best example of that. Notice I'm not arguing about every example. I'm referring to this one specifically. I think the process through which you've reached the conclusion in the bold is no different -- for better or worse -- than that of the person who thought this Rockies' fan was yelling something else.
Notice also I'm not asking for proof of this incident happening at all, or accusing you of making it up because you're desperate to keep "reverse racism" rolling. I'm taking you at your word, which is much more than any of y'all here ever due when it's a BIPOC accusing a white person of racism.