disparage

disparage    [dih-Spar-ij] 

verb. belittle or degrade a person or idea 

"They came up with all sorts of new and creative ways to disparage the president."

"The journalist-turned-startup executive apologized for disparaging the mothers she worked with in her 20s at Huffington Post and Washington Post."

"Have we not learned yet that disparaging religions can have long-term consequences?"

"But don't go that extra step of disparaging and belittling other kids."

http://www.vocabulary.com/dictionary/disparage