I really think it's all about getting to know each other. Then respect and understanding can follow.
At the beginning of the year lots of getting to know you activities. Things like Find Someone Who... There are games and printout s of this.
I do parts of the Responsive Classroom, especially morning meeting. It's a great way to greet one another and share something about ourselves. My fourth graders even bring in personal items( collection s, cards, stuffed toys, slime they've made). We know who has pets and annoying brothers and sisters
You can also do Interesting Surveys. I teach reading so mine is specifically about reading interests and habits.
Journal entries are one other source of learning about students so that you can reach them .