Bernie Sanders doesn't do negative campaigning. In his decades of public service, he has never run an attack ad.
He does, however, believe in challenging the views of his opponents.Throughout the course of the campaign, he has distinguished his own worldview from that of Republican presidential hopefuls. Here are some of his best “berns” of GOP frontrunner Donald Trump and other GOP candidates.
For example, Summarizing GOP Hate
Shortly after Bush's comments, Sanders summarized how his opponents seem to be avoiding the issues and just engaging in divisive hate by tweeting: “Can't @JebBush and the GOP run a campaign without attacking African Americans, Latinos, Muslims or other people?”