Disagreed. Any form of discrimination or ignorance should be challenged with more dialogue instead of less. Take whatever abhorrent ideological position you can think of and I will tell you that we should discuss it publicly, challenge it publicly, and destroy it intellectually in a public forum.

This has the advantages of:

* the person who held these thoughts outs themselves as a bigot as opposed to being a toxic agent

* a corpus of knowledge how to dispel/combat such positions is formed

* people who may be in the beginning stages of harboring such ideas are either discouraged due to strong public pushback or are helped to realize how wrong that position is