It appears he fired the staff funded by the taxpayers. Surely the socialists can fund the museum themselves?
It seems like they should do something like that. If nothing else, monuments to government atrocities should not be run by the government...
A lot of musea covering the many atrocities in East Germany have already disappeared. And even in the Berlin wall museum the reminders that the last leftists to rule there shot (many) people for the crime of trying to leave socialist utopia. In most Universities the academic victims of Soviet rule aren't remembered anymore.
So this is not a theoretical concern.