You have no idea what people are going through 

in their everyday lives, they could have parents who make them follow a cruel martinet, they could have beat-if-misbehave parents. Just because they don’t express their emotions 

does not mean they are not stoic people, They could be very good at hiding what's really bothering them, so next time you see someone that is looking down 

or gives you a bad attitude, ease up on them 

because you never know what's really going on.

They could secretly be crying out for help.

Rise up and be the one to ask them if they are okay.