Traumatizing yourself won't open cages.
Traumatizing yourself won't fill bellies.
Traumatizing yourself won't make others less cruel.
Suffering won't reduce suffering in the world.
You cannot abuse yourself into being sustainably industrious.
This, however, doesn't mean to do nothing. There is indeed an important need to be involved in helping one another, but the helping is what helps. There is a strong pressure from others to "not look away." This doesn't mean to literally watch every piece of media that comes out. At its core it means to not give way to apathy for personal comfort. The ways you help can be profound and personal without needing to traumatized yourself (and those around you.)
One thing a lot of people forget is the kinds of horrors that get shared come with their own risk to traumatize those most affected by those depictions of violence. If you have BIPoC, Queer, Jewish, or even just women friends in general, chances are they don't need convincing of the horrors in your life, and in these cases, showing them traumatic videos won't help them. It'll just traumatize them more.
I'm some ways, the best help you can provide may well be found in shielding them from these horrors. It is, in fact, a radical act to become a refuge your friend needs in these times. If you're not sure what you can do, look for others helping, and help in the same ways as them.
And if you do burn out don't try to abuse yourself into keeping up. Rest when you need. Grieve when you need to. Celebrate any way you can. There will be others to take up the mantle. For every awful person out there, there can be found good people also, if you seek them out.