As individuals there is little we can do against inhumanity such as this. For what it's worth, and mybe so that more will participate:
I write letters for Amnesty international. The writing campaigns have success, in the form of sentences being altered or prisoners being released. And it has success if for no other reason than that I and others, will not be silenced. I don't know how it works in the US, or UK, but here in the Netherlands I registered for the Women-rights network and get an email every months with the request to send letters for a particular cause. This month it is to the government of Iran regarding the discriminating laws against women.