At least one Russian at Trump Tower meeting was a Hillary Clinton supporter. Ike Kaveladze considered backing out of the meeting when he learned it was intended to hurt the Democrat's campaign-Washington Post, 5/16/18

.
May 16, 2018, "Inside the June 2016 Trump Tower meeting: A droning Russian lawyer and hot pink jeans, but no Clinton dirt," Washington Post, Rosalind S. Helderman, Karoun Demirjian 

"It was a motley group that went to Trump Tower that June [June 9, 2016] afternoon. Besides Goldstone, Agalarov sent a U.S.-based employee, ,

Kaveladze testified that he considered backing out of the meeting when he got wind that it was intended to hurt the Democrat’s campaign."...

..............