Complex sentence: In August 2004 the International Lesbian and Gay Association reported that the Belarusian authorities forced a gay cultural festival, Moonbow, to be canceled amid threats of violence; foreigners who participated in any related activities would be expelled from the country.
Split into simpler sentences: In August 2004, the International Lesbian and Gay Association reported that the Belarusian authorities had forced a gay cultural festival, Moonbow, to be canceled, amid threats of violence. Foreigners who participated in any related activities would be expelled from the country.