you link says that BLM has been branded as Marxist "The attack has been made in recent weeks by Rudy Giuliani, President Donald Trump’s personal lawyer; Ben Carson, Trump’s secretary of Housing and Urban Development; conservative talk show host Mark Levin; and PragerU,"
"There are definitely socialists within the movement, as there have been in every single social movement in 20th century American history and today. But that does not make those socialist movements, it makes them mass movements,"
"Black Lives Matter’s "emphatic support for gender identity politics sets it apart from historical Marxism,"
"the goals listed on its website do not appear to be expressly anti-capitalist, which would arguably be a Marxist identifier,"
"I am fairly convinced these are mostly attempts to smear anti-racist activists. I think in some media, ‘Marxist’ is dog-whistle for something horrible, like ‘Nazi’, and thus enables to delegitimize/dehumanize them," Miriyam Aouragh"