If someone needed a helping hand would you help them?
If someone was being mistreated would you do whatever you could to stop them from being mistreated?
If someone needed to be encouraged would you say or do something that would encourage them?
If you needed help you would hope someone would help you, wouldn't you?
If you were being mistreated you would want someone to rescue you so you wouldn't be mistreated, wouldn't you?
If you needed to be encouraged you would be thankful if someone encouraged you, wouldn't you?
If you ignore bad behavior it will become acceptable.
And if you ACCEPT it than you can EXPECT it to eventually happen to you or someone you love.