So?

Big fat black nigger!

Am I a racist now? Of course what he says refers to race but saying something does not equate to being something. Screaming "nigger" over and over out of rage is nothing more than teenagers scribbling swastikas all over their school toilets. That doesn't mean he's racist. It just means he's really really stupid.

I was going to defend him because such rage outburst could happen to the best of us. but seeing how he first shouts and then calmy say the n word. at that moment he propably was already in control so it seems on purpose.

He didn't say it as a quote. He said it to be either hurtful or to relieve anger. If it's the former, he's an overt racist. If it's the latter, he's probably just got some repressed feelings, and can probably rid himself of his racist tendencies.

Also, talking about your edit, he's not some teenager, he's 28 years old.

True, but he did say it to someone though. Not sure if he was black or not though.

The video shows a mental age of about 4.

He just tried to say the most offensive thing that came to mind. In the US it's "nigger". If he said "faggot" over and over he would probably be labeled as homophobe and if he said "bitch" then he'd be a sexist. But that's not how "-isms" work. You're not instantly it once you said the magic word. That's just prejudiced labeling.

if he said "faggot" "faggot" "faggot" "faggot" "gay homosexual faggot" "gay fat homosexual queer faggot" then yeah, I'd assume that he's homophobic too. If his intention was to be offensive, wouldn't that mean that he wants people to think he's racist?

There is no doubt he deserved to be kicked from it.
However I would blame such bad habits like using this word on some songs.
To this day, there are still songs where the rapper or singer uses this word, except it's fine because the artist is of said skin color.

But the audience may be of any skin color and finding it funny/liking the song, causing them to use it.

Shock value. The shock value doesn't come from what people think of him but from the mere mentioning of a taboo word. And he was pretty much in a rage so I doubt there was a lot of any intention behind his words.

I just don't like the instant witch hunts as soon as someone says something naughty. People love to instantly stick labels based on buzzwords completely ignoring what's behind those words, which is most often simple stupidity.

Think of the actual hard working racists and homophobes how they must feel when suddenly everyone is labeled as them despite not having any intentions behind their words.

No intentions behind their words? But you just said that he was trying to say the most offensive thing that he could think of. So, it sounds like his intention was to offend people, and offend people he did.

Yep. I'm saying being offensive might've been the only intention behind his words. Which means he was not being racist, just childish.