Do u hate stupid people?
No. In fact how does one make such a judgement? Many intelligent people are uneducated. Many people who would score low on a standard IQ test can show genius in other fields. I have no way of knowing just what skills and talents people have.
My policy is to treat everyone as intelligent though some may have more difficulty than others in grasping certain concepts.
Respect is key here. Treat everyone with respect. It is the prudent thing and the compassionate thing.