Here's the transcript, decide for yourself:

[thesquanderer]

121. He says that people on both sides of the gun issue shout instead of working to find common ground

from
http://www.slate.com/articles/news_and_politics/politics/2015/10/hillary_clinton_is_smearing_bernie_sanders_as_a_sexist_it_s_an_insult_to.html (including links)

Let’s be clear: This isn’t what happened. During the debate exchange, Sanders answered O’Malley with the same point about “raising our voices.” Sanders has been giving this answer for years. He did it in July, after an O’Malley super PAC ad attacked him (“We have been yelling and screaming at each other about guns for decades,” said Sanders). He did it again in August, after a male surrogate for Clinton attacked him (“I can get beyond the noise and all of these arguments and people shouting at each other”). He did it again in October, after the mass shooting in Roseburg, Oregon (“People on both sides of this issue cannot simply continue shouting at each other”). Sanders gives this answer to everyone.