Are the protesters for George floyd overly exaggerated? ?

Yes, in fact they're very overexaggerated.  Mob mentality tends to do that.

First, there's no actual evidence that racism was involved in George Floyd's death.  The fact that he was black isn't proof of anything.  He was arrested because he was identified as the guy who just committed a crime, not because he was black.  The four cops who attended his arrest have been fired and charged, yet the protests haven't stopped.

These protestors are demanding change now, but what change are they demanding?  Getting rid of police isn't going to happen.  And if they want to change the way black people are treated in major cities, why are they demanding that white people do all the changing?  

It's not white people who make black kids drop out of high school and live on welfare.  There are no white people forcing black guys to murder each other with dismal regularity.  There's no white people forcing black girls to become single mothers of six kids all from different fathers.  No white person ever encouraged 15% of the population to commit over 50% of the violent crime.

why is that reasonable? the cops didnt kill him anyway. who really cares though i dont understand the real fascination with liking bad people. u wouldnt want these people in your personal life why do u care what happens to them

George was murdered by brutal and probably racist cop(s). He contributed to his own demise, by refusing to obey their orders, and inciting them verbally.

It may seem that way if you see it as an isolated incident, but itś rather the straw that broke the camel's back

I don't know why this gets so much attention. I could understand 2 or 3 demo's (rallies) in the netherlands, but 6 or 7, spread over 3 days? maybe it's a release of social-distancing-fatigue.

I'd love to see as much protesting against sorely lacking climate-change-policy or against CETA and ISDS

Anger takes many forms.  And it is not just the left that suffers from 'cognitive thinking'.