If setting the image of a courthouse where a Black man was hanged by a White lynch mob against footage from Black Lives Matter protests isn't racist, what is? Jason Aldean was appealing to the rage of conservative White Americans, and doing so successfully based on the track's popularity. Protesting police brutality does not constitute violence, but his insinuations may very well incite racial hatred and violence against Black people.
The left will blow anything out of proportion if it helps them rid American society of pro-gun or anti-urban sentiments. Jason Aldean didn't choose the Maury County courthouse because it was the site of a lynching, but probably because it's a short drive from Nashville and provided an excellent small-town aesthetic for his video. This is far from the first country song to condemn urban violence, but that clearly doesn't matter to those who want to crush this traditional part of American culture.