Complex sentence: One of its activists, nicknamed "Frenchman", allegedly instigated the forced entry into the Legislative Council Complex, in which masked raiders rammed glass doors and dispersed promptly after two panes of the glass door were broken.
Split into simpler sentences: One of its activists, nicknamed "Frenchman" allegedly instigated the forced entry into the Legislative Council Complex. The masked raiders rammed glass doors and dispersed promptly after two panes of the glass door were broken.