I’m still not sure how that proves systematic racism exists. The majority agrees that the act was racially charged and wrong.
I didn't say it proved systemic racism. What I said was that your statement doesn't somehow
disprove systemic racism.
While the majority probably agrees it was racially motivated, the majority of this country skews "liberal" or "Democratic", too. That doesn't mean systemic racism doesn't exist, because when - say - 45% of the country thinks one way, that can still be systemic. If it were an 80 or 90% majority, then yeah.
But you see in this thread alone that while a "majority" agrees it was racially motivated, there's still a large minority that does not. In such a situation, you can have systemic racism, especially in areas where people of that mindset are largely in power.
The bottom line is, we've made progress since the 1800s and 1960s, but there are still elements of this society aligned to oppress. And in some cases, we're simply dealing with the repercussions of two centuries of oppression.
E.g. in some areas of the south where educational opportunities weren't equal for a century, we're only one generation removed from active educational oppression of poor black people. The children of those people who were going to school in substandard conditions are just now having their own children... and that affect is generational. That is not something that is fixed like flipping a light switch.