Briefly in Nemtsov March, Russia’s Opposition Leaders Come Together.

For the third year running on Sunday afternoon, the disparate political movements in opposition to Russian President Vladimir Putin came together — if only for a brief few hours — to march in the memory of murdered Kremlin critic Boris Nemtsov.

“The march is symbolically important for the entire democratic opposition,” one of the march’s organizers, Moscow municipal deputy Ilya Yashin, told The Moscow Times a day earlier. “We of course have many different views, but on this day each year it all becomes secondary.”

Yet with only three weeks to go until a presidential election that Putin is widely expected to win, political analysts say that Sunday’s temporary unity was just that: symbolic.

Nearly three years ago, on Feb. 27, 2015, Russia’s opposition movement lost one of its most lauded leaders, when the former deputy prime minister was shot in the back while crossing the Bolshoi Moskvoretsky Bridge, just steps from the Kremlin.

The death of one of Putin’s fiercest critics was widely suspected to have been a planned assassination from the upper echelons of the Chechen leadership and tacitly condoned by the Kremlin. Although five men were convicted for the killing last year, Nemtsov’s family and supporters believe those who masterminded his murder are still walking free.

On Sunday afternoon, marchers carried signs and broke out into chants, blaming both Putin and Ramzan Kadyrov, the leader of Chechnya, as having been responsible for his death.

But beyond the calls for justice for Nemtsov, his supporters also demanded that Putin leave power altogether, regularly shouting, “Russia without Putin.”