Yes, we can only do what we can. That being said, Kaepernick has a much bigger platform than most people do.
Is it within Kaepernick's wheelhouse? Absolutely! He brought the attention to this issue, did he not? Does he really want things to change and get better for people in the black community? Talking to officials or leaders in communities, people with real clout would show leadership.
Reaching out to leaders in the cities and states and communicating with chiefs of police to discuss the problems in these communities would go a long ways in attempting to bring change.
President Trump invited Kaepernick to the White House to discuss these issues, and Kaepernick turned him down.
Even if he had accepted Trump's offer and nothing positive came of it, the attempt to discuss the issues with him, would have spoke volumes to me and I think many other people, but he didn't.
Which makes me wonder, does Kaepernick really want things to change in the black community?
Leaving it in better hands? To me that would be a cop out(no pun intended). Don't start what you can't finish, and don't leave all the heavy lifting to those who support you.
I don't know if Tebow does this or not.
The only thing that came from Tebow's kneeling was anger and rage from anti-religious boors.