I'm going to ask myself a few questions, and will answer honestly.

Do I think my race is superior to any others? No.
Do I discriminate against other races, or support discrimination of other races? No.
Do I hate other races, or tolerate other peoples' hatred for other races? No.

Ergo, I am not racist.

You guys might well think I should answer yes to the second and third question, but that's because you are assuming the police in the UK are racist, and I support that racism. That's not true. I don't believe the police are racist, and if it's proven that I am wrong, I will not support such racism.

I am either right, there is no problem with institutional racism in the UK police, or I am wrong and ignorant. Ignorance is not racism.