Complex sentence: California is a base for some groups which support legalization of marijuana use, and it also is home to strong opponents of criminalization as in 2008 California police made 78,500 arrests related to marijuana.
Split into simpler sentences: California is a base for some groups which support legalization of marijuana use, and it also is home to strong opponents of criminalization. In 2008, California police made 78,500 arrests related to marijuana.