“We were robbed!” sentiment among Sanders supporters is getting out of control. Photo: Eric Thayer/Getty Images

Bernie Sanders gained a split decision in Tuesday’s presidential primaries, losing to Hillary Clinton by an eyelash in Kentucky and beating her by a more comfortable but reasonably close margin in Oregon. The net results won’t significantly reduce Clinton’s lead in pledged delegates, leaving Sanders with a nearly impossible task of winning the June 7 primaries by huge margins to overtake her. But again, it remains unclear whether Sanders will pack it in if he loses pledged delegates. Indeed, in a speech Tuesday night in California, Sanders simultaneously discussed the tough odds against winning a majority of pledged delegates and promised to “take the fight to Philadelphia,” apparently no matter what.

This ambiguous situation needs to be understood in the context of what happened this weekend in Nevada, where an ugly and fractious scene emerged at a state convention where four delegates to the Democratic National Convention were being selected. Veteran Nevada political reporter Jon Ralston watched it all and came away convinced the Sanders campaign had deliberately fed supporters spurious grievances over the rules in order to rationalize what was actually a fair-and-square Clinton victory in organizing for the event, which after all, simply confirmed Clinton’s earlier win in the February caucuses.

By the time hotel security shut down the event late Saturday evening, the Sanders delegates had hurled ugly epithets at Clinton surrogate Barbara Boxer and used a sign to block her from being shown on big screens; they had screamed vulgarities at state chairwoman Roberta Lange, who later received death threats after Sanders sympathizers posted her cellphone number and home address online; and they threw chairs at the stage as they rushed forward to try to take control of a convention they had lost, just as Sanders was defeated at the February 20 caucus by Clinton in a decisive result.

Ralston suspects this atmosphere of paranoia and self-pity could easily carry over to the national convention, assuming Clinton arrives there as the presumptive nominee via a narrow lead in pledged delegates. I’d say that’s a reasonable suspicion if Bernie Sanders and his campaign operatives continue to insinuate that the nomination is being stolen from him. The Nevada Democratic Party agreed in a letter to the DNC after Saturday’s near-riot:

We believe, unfortunately, that the tactics and behavior on display here in Nevada are harbingers of things to come as Democrats gather in Philadelphia in July for our National Convention. We write to alert you to what we perceive as the Sanders Campaign’s penchant for extra-parliamentary behavior — indeed, actual violence — in place of democratic conduct in a convention setting, and furthermore what we can only describe as their encouragement of, and complicity in, a very dangerous atmosphere that ended in chaos and physical threats to fellow Democrats.

And it’s not just mainstream media folk and Establishment Democrats who feel this way. Esquire’s Charles Pierce, a Sanders supporter, was upset enough about Nevada to urge Sanders to “pack up and go home”:

[T]he Sanders people should know better than to conclude what has been a brilliant and important campaign by turning it into an extended temper tantrum. I voted for Bernie Sanders … But if anybody thinks that, somehow, he is having the nomination “stolen” from him, they are idiots.

Nevada aside, consider the three arguments heard most often from the Sanders campaign against the unfair conditions it has endured.

The first is that DNC chair Debbie Wasserman Schultz conspired to limit opportunities for candidate debates. That’s probably true. But there’s no particular evidence these events disproportionately benefited Sanders, who had no trouble getting to the starting gate with high name ID and plenty of support (viz the “virtual tie” in Iowa and his big win in New Hampshire). And she was forced to add some debates. Don’t know about you, but I feel like I heard from the candidates enough.

The second is that closed primaries (aggravated in some states by very early deadlines for changing party affiliation) disenfranchised many Sanders supporters. Let’s be clear about this: None of the primary participation rules were set after the Clinton-Sanders competition emerged. States with closed primaries have for the most part always had closed primaries. Until this cycle, moreover, it was typically Democratic progressives, not “centrist” Democrats, who favored closed primaries as a way to elevate the influence of “base” as opposed to “swing” voters. In no way, shape or form were these rules set to thwart Sanders or candidates like him.

And the third is that superdelegates (who at present overwhelmingly support Clinton) have tilted the playing field away from the people-powered Sanders all along. But Bernie’s people have a “clean hands” problem in making this argument, since they are simultaneously appealing to superdelegates to be prepared to deny the nomination to the pledged delegate winner (almost certainly Clinton) based on elites’ superior understanding of electability criteria. Beyond that, this is the ninth presidential cycle in which Democrats have given superdelegates a role in the nominating process. It’s not like it’s a nasty surprise sprung on the poor Sanders campaign at the last minute to seize the nomination for Clinton.

But even if these arguments for a big Bernie grievance are pretty empty, you can appreciate that the close nature of this year’s nominating contest makes it easy to assume something fishy happened, particularly if you begin with the assumption, as some Sanders supporters do, that your opponents are unprincipled corporate shills. It’s like Florida 2000: In a race this close, you can blame the outcome on anything that makes you mad, from Joe Lieberman’s support for counting overseas military ballots to Ralph Nader’s presence on the ballot to dozens of single events like the Brooks Brothers Riot.

Unfortunately, in a statement Sanders issued after the torrent of criticism over his supporters’ behavior in Nevada, the candidate was defiant, perfunctorily disclaiming violence and identifying closed primaries with dependence on corrupt big money cash. Prominent progressive blogger Josh Marshall read it and commented on Twitter:

One thing is largely indisputable: Bernie Sanders himself could help clear the air by informing his supporters that while there are many things about the Democratic nomination process that ought to be changed, no one has “stolen” the nomination from him or from them. Perhaps a thousand small things gave Hillary Clinton an “unfair” advantage in this contest, but they were mostly baked into the cake, not contrived to throw cold water on the Bern. And the best step Sanders’ supporters could take to promote their long-term interests in the Democratic Party would be to get a grip before they wind up helping Donald Trump win the presidency. And Bernie Sanders himself has a responsibility to talk his devoted followers off the ledge.