How to remove all players humanoid?

Current Script :

game.Players:WaitForChild("Jack_Hase")
local player = game.Players:GetPlayers()
for i = 1, #player do
player[i].Character:Destroy()
end

Error : Workspace.Script:4: attempt to index field 'Character' (a nil value)

So what I want this script to do is remove all player's humanoid or make all players ragdoll forever. This could be used in an earthquake where the shake is so strong, no one can stand up, they all ragdoll.

Thanks