I'm going have to watch it again now.

Prompted by this thread I just watched Went The Day Well? again, sure it's a 1942 propaganda film and some of the performances were a bit mannered but there are some pretty brutal scenes in it (the post office lady, the hand-grenade scene).

I wonder if George Romero watched it (it certainly influenced The Eagle Has Landed).

If only George Lucas had used a similar approach in the invasion of Naboo, having real people fighting back instead of pixels.