If people don't like bitcoin then ignore them because they didn't have anything to help with the bitcoin and they are just haters who will try to down the bitcoin by spreading bad feedbacks or anything bad about bitcoin. But if you want to teach them and make them realize that bitcon is good and turn them into bitcoin supporters then try to explain and refer this forum to make things clear.
I did not meet any people that they hate Bitcoin till today. But when I talk about bitcoin many people asked me how the Bitcoin will work and what is the use of this Bitcoin. They showed too much interest about this Bitcoin. All most all positive response I got until today. And what you said it's right if anyone talk negative about Bitcoin just ignore them.