The rearview mirror (the one that hangs off the windshield) is for seeing directly behind you. Your side mirrors are for seeing things to the right and left of you. If the driver directly behind you can see your face in your side mirrors, or you can see their front windshield, and your rearview mirror both exists and is unobstructed, then you are driving around unreasonably blind to vehicles overtaking you. This blind spot can be almost completely eliminated.
The side mirrors should be positioned thus that you have a clear view of the lanes next to you, with the door handle or body of the vehicle just slightly out of view. You can lean and tilt your head if for some reason you prefer a view of what's going on behind you that is half obstructed by the vehicle you are currently driving.
The goal is to maximize the area covered by the mirrors so you can see more things, not to have redundant views of the same thing.
And what's your plan to get that done? What, you're going to convince wealthy politicians to give you those things, and piss off their donors, just out of the goodness of their hearts? What about when they don't do that, are you going to find your backbone and criticize them directly instead of turning all of your vitriol to the left of you?
No, of course not. Your plan is to vote harder and throw up your hands when the things we desperately need as a class are explicitly left off the table; spoiling the vote, btw; because the things that would really get people out to vote, across party lines, just happen to be things that go against the interests of the ruling class. Then you'll shout at the rest of us for "dividing the left" when we point out the fucking obvious that those who derive power from capital are not going to give up that power voluntarily and the whole thing was smoke and mirrors to keep you invested in the system that affords them that power.
We as a class will need to organize and build class consciousness so that we can pull our collective power together and use it to force the hand of the ruling class. That's what a realistic plan looks like. That is the only way meaningful change has ever been wrought about in this country.