You were not afraid, and we are not afraid!
The crowd have also chanted "No to war", "we will never forget" and "murderers", any of which could result in action bring taken against the chanters. Of course it is illegal to use the word "war" in Russia when referring to Ukraine.
It's making me wonder if Putin is now regretting his murderous actions, as the world's press is watching and reporting on the scenes in Moscow. Undoubtedly many of the crowd will suffer for what they are now doing, but there will still be other Russians across their nation who could now feel empowered to get an underswell moving against Putin.
Here is a BBC link:
BBC News - Mourners shout in defiance at funeral for Alexei Navalny
https://www.bbc.co.uk/news/world-europe-68435167