Jay Y Lee
Support for his release had grown in political, public, and wider business circles
Trial will decide if he returns to jail for alleged bribery
The de facto leader of the group appeared in court on Monday
Lee and about 25 other defendants were charged with sabotaging union activities
South Korean court voided earlier decision to suspend Jay Y Lee’s prison sentence
Park Geun-hye was ousted from office last year and jailed on corruption charges
Supporters demand release of Park Geun-hye, ousted last year in influence-peddling scandal