Complex sentence: In 2000, he was arrested while participating in a non-violent demonstration outside Montreal; later that fall at a G-20 protest in Montreal he was again arrested, only to later be acquitted of all charges.
Split into simpler sentences: In 2000, he was arrested while participating in a non-violent demonstration outside Montreal. Later that fall at a G-20 protest in Montreal he was again arrested, only to later be acquitted of all charges.