Complex sentence: The City of Calgary has ongoing friction with the Calgary Street Ministries since 2005, although this relationship has existed prior to Nenshi taking office, Nenshi is accused of being an anti-Christian bigot by journalist Ezra Levant.
Split into simpler sentences: The city of Calgary has ongoing friction with the Calgary Street Ministries since 2005. Although this relationship has existed prior to Nenshi taking office, Nenshi is accused of being an Anti-Christian bigot by Ezra Levant.