Shouldn't people be celebrating the fact there was no massacre?
try going to china and shouting tiananmen square in front of the police station a few times.
If they killed no one and ended the protest peacefully, how would they react?
They still react with handcuffs. At the best an officer is going to scold you. At worst you get arrested for inciting violence and thrown in jail. Its an open secret as to what they did, how many they killed.