According to a study undertaken by stanley milgram, individuals will

Stanley Milgram showed that individuals will cause other individuals harm if ordered by others and if they don't have a direct contact with those other people, but are separated by technology. 

In his experiment, people thought they are applying electric shocks to other participant under the orders of the experimenters and most of the participants did not refuse to administer those shocks. 

Water(like when there is a hurricane)some foods(not enough for everyone)

Idisagree because it would have harmed our whole society. starting from the madness of the civilians to the mass destruction of towns.