Long story short: tell your government to fight monopolies, environmental racism, and truck pollution; tell big corporations to stop funding anti-abortion politicians, and tell Verizon to drop OAN from their lineup. Use the email/petition tools in the following paragraphs to communicate your will.
Americans for Financial Reform helps you tell our Department of Justice (or DOJ) and Federal Trade Commission (or FTC) to enact the most vigorous rules possible against mergers. Mergers hurt people -- through lost jobs, higher prices, and increased corporate power to do more harm. I bet "higher prices" sure resonates with good Americans right about now, but increased corporate power also means lower wages, dirtier air and water, and more dangerous products. It also means no Medicare drug price negotiation, if you've paid attention to Kyrsten Sinema's big donor gatherings. We can help put a stop to all of that, by telling our government what to do.
The League of Conservation Voters helps you tell our EPA to help communities afflicted most by pollution -- meaning, generally, our poorest communities, which will also be Black or Brown communities most of the time. Right-wingers can sneer at the notion of "racist pollution" all they want, but big polluting corporations situate their most polluting facilities near the poorest neighborhoods for a reason -- namely, that the poorest communities are also the least powerful communities, and thus the least able to stop pollution from overrunning their neighborhood. Thomas Sowell might cringe to hear this, but there's only so much damn bootstrapping folks can do; they also need help keeping polluters out of their grills.
The Union of Concerned Scientists helps you tell our EPA to enact the most vigorous heavy-duty truck emission regulations possible. I said "regulations" just to trigger right-wingers who think regulations are inherently evil! Heavy-duty trucks aren't the most common vehicles on our roads, but they do cause most of the air pollution that wrecks our lungs. And we might as well ask for zero emissions from our trucks; even if we don't get them, we stand a much better chance of getting something better than what we've got. And no, regulations don't kill jobs. Corporate executives kill jobs. You know they'd replace you with a mound of dung if they could get away with it.
People for the American Way helps you tell big corporations to stop funding attacks on abortion rights, mainly through their donations to anti-abortion politicians. They say they do it for economic reasons, which is an excuse almost calculated to offend someone like me more, but their intent doesn't matter when the result is a Supreme Court that's all but declared open season on every right not specifically imagined by a 250-year-old dead man. Don't brook any right-wingers saying it's their money and they can do what they want with it. It's your speech, too, and you can shame them and shun them if you like. Corporations don't have more rights than you.
Daily Kos helps you tell Verizon to drop the notorious One America News Network (or OAN, or OANN) from their lineup. We got AT&T to do it, so now we get other corporations to do it. OAN purveys noxious right-wing propaganda with every breath their on-air personalities draw, but don't settle for throwing up your hands and saying they have the right to free speech. First off, people have First Amendment rights, not corporations. And second, insofar as a corporation has a right to speech, it doesn't have a right to publication of that speech, on a platform, anymore than I have a right to compel Random House to publish my books. We have to think harder about this stuff than we used to.