if there was a deep rooted issue of racism in this country and cops were disproportionately targeting black people with lethal force,
There is no "deep rooted issue of racism in this country" and cops are not disproportionally applying lethal force to black suspects. It is the media which almost exclusively focuses on blacks getting killed by police that are creating the illusion of that.
I'm a racist. I realize this. I see dark skinned people on the bus I ride every day, and I get irrational and insane perceptions being offered up by my mind of them being ridiculous ape people. I see some unearned perception of filth wreathing the sagged pants, and an unwarranted feeling of slime when some drunk African American has a stupid conversation.
I know that these feelings are entirely irrational. That these things I dislike are a product not of being black, but being poor and raised in a shitty culture. Even so, my mind has the unfortunate predisposition to see the taint of poverty and recklessness on anyone with dark skin. It's something I've fought with for years. Sure I can correct it whenever I see it rationally, but what about all the times I just Derp and don't notice until after I've already done or said something awful and undeserved?
So don't tell me for a moment there isn't a problem of racism in this country. I pride myself with my ability to disregard my feelings, but they are there, and I don't think they can ever not be there for humans; it's just too easy a leap for the intuititive mind to make.
I know you are a racist. So is everyone else. Any time there is a coincidental correlation between people who look a certain way and some detrimental element of culture, there will necessarily be feelings of racism.
Edit: the sad part of this is that the Bayesian mechanism that makes people intuit race rather than poverty as the element driving the things we see that we don't like is that even black people can end up racist from it in stunning ways, whether by being exposed to the 'zoo' and seeing poor people who happen to be black acting recklessly in an attempt to stop being poor (effort does little to help people who by default lack access to legal employment networking) or by becoming defensive of all the things that they learned when they were young about what it 'means to be black' and defending the very cultural elements people dislike and that, at any rate, they can't escape.