How to tolerate if someone insulting Buddhism?

I first apologize to ask like this, I'm so sorry but I found people who don't respect other religions by my one older question I had to ask almost like this one that one I'm asking. As this religion is secular and against violence. Teaching kindness, forgiveness and beyond the concept of god and religion. But at the time when someone insulting Buddhism what to do ? In Buddha's time he was en lighted he could make them feel what they are doing, there were so many incidents he changed them but when I seen someone insulting Buddhism I feel like I must break first precept; all the time I tolerate because I'm not violent and it's not what I learn, but I get really really angry. Also bad people look at us as beneficial sake and annoying that we are non-violence and so can't do nothing. There's quote of Napoleon Bonaparte “The world suffers a lot. Not because the violence of bad people. But because of the silence of the good people." I don't expecting war and violence but peace. Thank you.