The Supreme Court effectively abolishes the right to mass protest in three US states | It is no longer safe to organize a protest in Louisiana, Mississippi, or Texas.
The best option would be to increase its size — it was designed to have as many justices as there are appeals circuits, but the number of appeals circuits was rasied without increasing the size of the Supreme Court. Doing that will require electing a Democratic President and at least 50 willing Democratic senators (eg: a total of 55+ Democrats in the Senate)