kids are respectful and caring and loving when we give them space and give them precise limits and boundaries. 

they are understanding their own space in life and if you guide them to be responsible for what they feel and do, being there with them to embrace their emotions and saying no to some actions, they will certainly respect others space as well. 

the consequences of their actions are not punishment, but having to deal with the emotions they feel after they notice they have hurt someone and with the "no" someone said to them. I have so many experiences of kids being so genuinely nice to each other after they had a conflict and an adult was there with them without taking sides, just willing to listen to each  kid, how they felt, what they needed. that's, I think, is the job of adults.