What happened to the communists after the protests of Bloody Sunday?

When the Bloody Sunday protests happened in 1905, the communists were not the main force behind them.  But the communists used the protests to help them gain some amount of power.  Specifically, they started to organize "soviets" in St. Petersburg in the later parts of 1905.

Before long, the soviets were outlawed and suppressed, so it's not as if there was this unbroken move toward power for the communists.  They really weren't heard from again until 1917, but the 1905 soviets gave them a model to use for 1917 when they actually had the chance to come to power.