-- When they hear news of a tragedy their first thought is “How can this help the cause?”--
This is not quite right. Many self-styled progressives -- George Orwell, where are you when we need you? -- will grasp the outline of the tragedy, realize (dimly) that it cross-cuts their worldview, and then either refuse to acknowledge it, or strain to deem it "irrelevant."
The sole common factor among progressives is that they regard their overt aims as exculpatory. "But I didn't intend bloodshed, destruction, and impoverishment!" is supposed to absolve them of all responsibility for what their policies might wreak.