going postal

Why do spree killers always kill themselves when the police arrives?
Are police officers sacred or are they afraid of them or what?

we need another good killing spree soon... whadda ya say to a 4chan school rush? we all bring guns and explosives and rush 1 school a year... but to keep up with Cho, we will need to kill all but the hot women. and we also have  to take the wallets from everyone to pay for ammunition. we should keep the women and see if they will offer their "services" to us.