I don't know who Schumer is, but I am aware that Pelosi is a politician, and I have heard of Al Sharpton.
Not one of these people seems to be actually involved in this incident, except as political commentators (presumably with predictable and/or routine stances that they take whenever a shooting makes the news).
It seems more than a little strange, and quite distasteful, to me that, after a person is shot by police for no clear reason, the only aspect of the situation that Americans feel is worthy of comment is the routine knee-jerk responses of various political commentators.
Police shot a foreign national who was doing nothing wrong, and who had actually called them to her home, expecting their assistance. This doesn't strike me as a cause for partisan political bullshit; It clearly has fuck all to do with the gun control debate, and precious little to do with racism.
Perhaps if Americans were to drop their political posturing for long enough to actually notice when a human being is killed (by people whose job is the protection of the public), things might be able to improve. While everyone in power sees a mere opportunity for political posturing, and while the people accept this response from them and comment only on their likely stereotypical responses, and not on the event that prompts them, nothing will ever improve.
tl;dr : What the actual FUCK, America?