Given the amount of state violence used against left wing protestors over the last month and the number of active political leaders championing that violence... I really don't agree. Leftist speech is silenced with guns. And the free speech supporters sit silent.
Many of the people who raise objections based on “free speech” every time a private entity declines to actively participate in amplifying right wing speech have been actively cheering the events you describe, and arguing they need to be intensified, not sitting silent.