Sounds like someone tipped the Police to a suspect in on your Block, or a suspect fled into your block. Just stay calm, and lock the doors, and if the Police do come to the door, make sure to help them out, and do what they tell you.
Stay calm you may be infected with a zombie virus or worse try getting out and see if that is possible if you are stopped then either some is about to get arrested for a long time or your already dead.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.