I hope most of people reading this will not find "Racism is bad" to be controversial.
The problem is even if most (i'd hope to say all) of us think racism is bad, some of us are still consciously or unconsciously racist.
I am not going to speak about the Black Lives Matters movement, because it's mostly USA centered (which is kind of far for me) and there's much better people to listen than me, so go and listen to them.
In this case I'm going to speak about the Romani/Roma/gypsies in Barcelona (and from what i can see in this Pew Research article, most of Europe).
Institutionalized hate against them is so deep that definition 2 of 6 in the Catalan dictionary for the Romani word (gitano) is "those that act egoistically and try deceive others" and definition 5 of 8 in the Spanish dictionary is "those that with wits and lies try to cheat someone in a particular matter"
Here it is "common" to hear people say "don't be a gitano" meaning to say "don't cheat/play me" and nobody bats an eye when hearing that phrase.
It's a fact that this "community" tends to live in ghettos and has a higher percent crime ratio. I've heard people that probably think themselves as non racist say "that's just the lifestyle they like".
SARCASM: Sure, people love living in unsafe neighbourhoods and crappy houses and risking going to jail just to be able to eat.
The thing is when 50% of the population has an unfavourable view of you just because of who your parents are, or your surname is, it's hard to get a [nice] job, a place to live outside the ghetto, etc.
So please, in addition to saying that you're not a racist (which is a good first step), try to actually not be racist too.