Westerners opposed to the application of the Islamic law (the Shari‘a) watch with dismay as it goes from strength to strength in their countries – harems increasingly accepted, a church leader endorsing Islamic law, a judge referring to the Koran, clandestine Muslim courts meting out justice. What can be done to stop the progress of this medieval legal system so deeply at odds with modern life, one that oppresses women and turns non-Muslims into second-class citizens?

A first step is for Westerners to mount a united front against the Shari‘a. Facing near-unanimous hostility, Islamists back down. For one example, note the retreat last week by the Council on American-Islamic Relations (CAIR) in a dispute concerning guide dogs used by the blind.

Muslims traditionally consider dogs impure animals to be avoided, creating an aversion that becomes problematic when Muslim store-owners or taxi drivers deny service to blind Westerners relying on service dogs. I have collected 15 such cases on my weblog, at "Muslim Taxi Drivers vs. Seeing-Eye Dogs": five from the United States (New Orleans, Cincinnati, Milwaukee, Brooksville, Fl.; Everett, Wash.); four from Canada (Vancouver, twice in Edmonton, Fort McMurray, Alberta); three from the United Kingdom (Cambridge, twice in London); two from Australia (Melbourne, Sydney); and one from Norway (Oslo).

News accounts quote Muslim cabbies rudely rejecting blind would-be passengers, yelling at them, "No dog, No dog, Get out, get out"; "Get that dog out of here"; and "No dogs, no dogs." The blind find themselves rejected, humiliated, abandoned, insulted, or even injured, left in the rain, dropped in the middle of nowhere, made late for an appointment, or caused to miss a flight.

Australian Human Rights Commissioner Graeme Innes and his guide dog. Innes is often denied service by taxi drivers.

However, when the police and the courts are called in, the legal rights of the blind to their basic needs and their dignity almost always trump the Muslim dislike for dogs. The Muslim proprietor or driver invariably finds himself admonished, fined, re-educated, warned, or even jailed. The judge who found a cabby's behavior to be "a total disgrace" spoke for many.

CAIR, realizing that its approach had failed in the courts of both law and of public opinion, suddenly and nimbly switched sides. In a cynical maneuver, for example, it organized 300 cabbies in Minneapolis to provide free rides for participants at a National Federation of the Blind conference. (Unconvinced by this obvious ploy, a federation official responded: "We really are uncomfortable … with the offer of getting free rides. We don't think that solves anything. We believe the cabdrivers need to realize that the law says they will not turn down a blind person.") And, finally, last week, the Canadian office of CAIR issued a statement urging Muslims to accommodate blind taxi passengers, quoting a board member that "Islam allows for dogs to be used by the visually impaired."

CAIR's capitulation contains an important lesson: When Westerners broadly agree on rejecting a specific Islamic law or tradition and unite against it, Western Islamists must adjust to the majority's will. Guide dogs for the blind represent just one of many such consensus issues; others tend to involve women, such as husbands beating wives, the burqa head coverings, female genital mutilation, and "honor" killings. Western unity can also compel Islamists to denounce their preferred positions in areas such as slavery and Shar‘i-compliant finances.

Other Islam-derived practices do not (yet) exist in the West but do prevail in the Muslim world. These include punishing a woman for being raped, exploiting children as suicide bombers, and executing offenders for such crimes as converting out of Islam, adultery, having a child out of wedlock, or witchcraft. Western solidarity can win concessions in these areas too.

If Westerners stick together, the Shari‘a is doomed. If we do not, we are doomed.