Is This An Unsafe Boise Office?

This picture showcases what I see as a problem in our office.  It seems to continually happen.  Someone uses the paper cutter and leaves the arm with the blade up.

I can just picture someone bump into it and something bad happen, yet it seems I'm in the minority.  I don't usually consider myself to be overly sensitive to these type of things, but this just doesn't seem smart to me.

I put the arm(s) down whenever I pass by, but maybe I'm just being overzealous.  It seems they're used and quickly returned to the "up" and "ready to do harm" position.

What do you think?  Am I over-reacting?  Do you have something that seems unsafe at your office or home?