By Ryan Charkow, CBC News Posted: Mar 8, 2011 10:47 AM ET Last Updated: Mar 8, 2011 10:53 AM ET A woman holds a sign reading 'Enough exploitation, we refuse service' during a demonstation in Warsaw on March 6, in anticipation of International Women's Day. A woman holds a sign reading 'Enough exploitation, we refuse service' during a demonstation in Warsaw on March 6, in anticipation of International Women's Day. (Kacper Pempei/Reuters)