The kid with the MAGA hat did not walk up to the drummer. He did smile, or "smirk" as you call it, just like the other guy who did walk up, and was just as close to the drummer. But nobody is complaining about the second guy are they?
Or are you also mad at the guy with the Indigenous People's March T shirt and the Antifa style scarf? Is he also "invading the drummer's space"?
And don't you see that there is plenty of space for the drummer to just step around the kid if he wanted to?
Watch the video Here