"How would their doing that effect you?"
Now we're getting somewhere. The notion that murder and subjugation, in Nazism and Communism, were somehow the purview of an isolated set of fanatics is the falsehood in the original analogy. Murder and subjugation, when directed at me, will affect me greatly, perhaps to the point that there would be no "me" to engage in tit-for-tat rationalizations on internet message boards.
And now, let's go full circle, back to Islam, shall we?
Granted but we are talking absent those things.
And yes there are some groups that absent those things do follow those philosphies.
How do they effect you?