What happened in Nevada could mark the most intense escalation of anger and frustration on display during the Democratic primary. Or it could be a signal of what’s to come at the national convention this summer. As the Sanders campaign presses forward, it must carefully consider whether the senator’s ambition for a political revolution is a goal best achieved by actively stoking the anger of his supporters—and, in a sense, encouraging them to tear it all down. That consideration, in turn, will need to be weighed against whether or not to suggest that Clinton and her team are engaged in illegitimate tactics—an argument that will make it far more difficult for the party to eventually unify and take on Trump.

In a statement Tuesday, Sanders said that the the campaign “believes in nonviolent change, and it goes without saying that I condemn any and all forms of violence, including the personal harassment of individuals.” But he also added, “If the Democratic Party is to be successful in November, it is imperative that all state parties treat our campaign supporters with fairness and the respect that they have earned.”

It’s true that the odds have always been against Sanders. But there is a difference between a candidate who amasses a competitive advantage playing by the rules and a candidate who actively breaks the rules. Part of what could make the rift between Clinton and Sanders supporters so hard to repair is that the two camps don’t necessarily agree on what side of that distinction each candidate is on, or whether or not there is even a meaningful distinction to be made. Many Sanders supporters believe that elements of the political landscape, such as the campaign-finance system, are fundamentally corrupt. So, in their eyes, even playing by the rules could signal corruption—for example, by relying on money from super PACs. The Clinton wing of the party, on the other hand, adopts a far more pragmatic approach, arguing that it’s necessary to play by the current rules to win the presidency and ultimately enact reform. But the more that Clinton is seen as a corrupt figure—as opposed to a politician simply advocating for a different, more incrementalist model of political change—the harder it will be for her to successfully extend an olive branch to disaffected Democrats and angry Sanders supporters.

There have been increasing indications that the upcoming Democratic Party convention may devolve into protests amid accusations from Sanders proponents that the primary process has been unfair. In early May, Sanders wrote to Democratic National Committee Chair Debbie Wasserman Schultz expressing concern that his supporters would not be adequately represented at the convention. “If the process is set up to produce an unfair, one-sided result, we are prepared to mobilize our delegates to force as many votes as necessary to amend the platform and rules on the floor of the convention,” he warned.