Gay groups say police are unnecessarily scrutinising them over activities planned for Sydney's World Youth Day, as civil libertarians rile at new police powers for this month's week-long event. Lapsed Catholic Luke Roberts is a homosexual activist and performer who goes by the stage name Pope Alice, a character best described as a celestial being of indeterminate gender. Along with Pope Benedict, Pope Alice will also be in Sydney during World Youth Day, hosting a "kiss-in" along Oxford Street in Darlinghurst. "I want to see Pope Alice express herself as a focal point for anybody - gays, lesbians, transgender, queers,...