Did the people at the door keep a count of everyone coming in?

CNN: Be ready for emergency at a crowded public gathering

Instead, the experts say to count to 10 and consider five critical questions before you walk out the door.

FORBES: The Five Most Critical Questions To Ask If You're Fired

Door-stepping is dangerous too. 15 census officials were killed during South Africa's count in 2001.

ECONOMIST: Censuses