The GOP is spineless. They do not want the 'bad' optics of being anti-blm during an election year. It just gives the opposition more fodder to play the race card. No matter how ridiculous we know this is; there are too many simple-minded people who blindly accept the narratives they are fed.
Most of the GOP is unable to weather the negative PR storm that would come with actually taking a stand against these anarchists who are being portrayed as "freedom fighters".
Yeah and what will Third party members do? Don’t make me laugh
Because being pro Marxist is such a winning strategy for the GOP.