In 2010, record flooding devastated Pakistan, killing 2,000 Pakistanis and displaced an estimated 20 million more. Today, a new kind of flood imperils this beleaguered, Muslim-majority country — a flood of hatred, religious intolerance and vigilantism inspired by the nation’s draconian blasphemy laws.

In the year of the flood, Asia Bibi, an unassuming Christian mother of five, was sentenced to death by the Pakistani government. Her crime: Drinking a cup of water. The charge against her was blasphemy, and her sentence was death.