We should realize that there is not always a very sharp distinction between a participant and a spectator. We all are sometimes a participant and sometimes are tired and just want to watch TV and be a spectator. Drawing a disctinction between spectator and participant may on occasion be helpful. E.g., a young person might hear this and start wondering by him/herself 'what am I doing on these social media for hours and hours' and cut back on it. Such things occasionally happen. The question is more whether a person is doing enough participation for the purposes of his/her creativity or not enough.
You are right that systemic inequalities should be pointed out and improved upon. On the other hand we should also not lose sight of the fact that the most equal and fair societies on the planet are the western ones. Even if one is part of a disadvantaged minority it might well be possible to make much of ones life in the West. Try being part of a disadvantaged minority in China and one might find oneself in a concentration camp instead.
I don't live in the US so I am a spectator as far as racism goes there but I agree that this exists and is a problem. Especially police shooting unarmed black people is obviously a horrible thing. I do have to note though, that your example comes from a long time ago and that much improvement has been made on this front over the decades. I also agree about imperialistic intellectual property, especially patents are a big problem. Software patents should just not exist, for instance. As far as the global south vs the global north I was under the impression that this situation has actually been improving in the last decade or so. People starving to death has been a diminishing problem, as far as I know.
On the one hand it is good to point out inequalities and do something about them but on the other hand it can also make people feel hopeless so that they will achieve less then they otherwise would. This is also something that is happening to black people in the US. I once was on an online forum where the posts of a young black person gave me the impression that a case of self-learned helplessness was going on there where most of the racism involved was coming from fellow black persons and that the group-think thing was not beneficial at all.