But according to a lawsuit filed by a Czech investor, Crowds on Demand also takes on more sordid assignments. Zdenek Bakala claims the firm has been used to run an extortion campaign against him.

Bakala has accused Prague investment manager Pavol Krupa of hiring Crowds on Demand to pay protesters to march near his home in Hilton Head, S.C., and to call and send emails to the Aspen Institute and Dartmouth College, where Bakala serves on advisory boards, urging them to cut ties to him. Bakala alleges that Krupa has threatened to continue and expand the campaign unless Bakala pays him $23 million.


Paid protesters? They're real — and a Beverly Hills firm that hires them stands accused of extortion in a lawsuit