Not sure you are aware how dictionaries work. There can be several definitions under one word, I used the first definition of the first link.
As I say, for a know-all, I am surprised you admit you weren't aware of that definition.
So lets get this clear.
You are now saying that there can be multiple definitions of racism and that you don't need to say you're of a superior race to be racist?
That's completely at odds with your original argument.
Has anyone yet explained how the tweet shows Bernardo believes his race is superior?
Are really going to pretend that you can't be racist unless you declare you think your own race is superior?
Why would I have to when the dictionary does it for me?
The dictionary doesn't do it for you, you don't need to believe your race is superior to be racist, and everyone fucking knows that already.