I’m not sure whether such things do much good, but Dioscorus Boles has started one in defence of Coptic Christians in middle Egypt currently under Moslem attack. You can sign the petition here.
It seems to be taken for granted that Copts in Egypt should live in subjection to the Arab majority. The people who acquiesce in this at the same time get excited about Irish Catholics in Northern Ireland. The Copts are one group who are denied self-determination and self-identity, and are forced to live under legal disadvantages and discrimination. This is not good; direct violence against them even less so.