This is the best time for it to show up. A little more than a week 'till election gives him very little time to respond, not that he is going to be able to put up much of a defense except for more outright lies and his own words will contradict those lies.
These communist infiltrated the civil rights movement in the earlier part of the 20’th century. As they did the Union, trade and a certain political party.
In more recent history we can see the weaponization of Eco concerns which have manifested the global warming movement..
The Marxist.communists have been consistent in there approach to consolidation of power. Infiltrate, reeducate, overtake, propagate, agitate, demonstrate, Consolidate.