Complex sentence: In 1969, he led a successful push for a city ordinance outlawing segregation based on race or religion in public accommodations, an issue that had been addressed nationally in the Civil Rights Act of 1964.
Split into simpler sentences: In 1969, he led a successful push for a city ordinance outlawing segregation based on race or religion in public accommodations. That issue had been addressed nationally in the Civil Rights Act of 1964.