The rally was the target of anti-gay attacks and resulted in 15 arrests.
Gay rights groups fly their pride flags in the face of St. Petersburg authorities.
The political instability is not encouraging tourists from visiting.
All U.S. citizens are in danger if they visit Russia, which may soon invade mainland Ukraine.
Protesters can gather in Khosta, a town seven miles from the Olympic Park.
The Prison Break star came out in a letter rejecting an invitation to a Russian film festival.