Islamic extremism’s rise in California — and what to do about it

Much has been written about the “Islamization” of Europe and the UK. Is it now California’s turn? Two major books — “Londonistan” by Melanie Phillips, and “Submission,” a novel from France’s Michel Houellebecq — have pictured an old continent that is increasingly at the mercy of often violent Islamists. Although the Muslim population in Europe...