Westbury Mayor Peter Cavallaro, whose winter battles are usually limited to clearing snow from village streets, stands at ground zero in the fight to keep a casino from going in across the street from several thousand village homes. Cavallaro has become the de facto leader in the fight to stop Nassau Off Track Betting Corp. from building a gambling emporium with 1,000 video lottery terminals… Westbury Mayor Peter Cavallaro, whose winter battles are usually limited to clearing snow from village streets, stands at ground zero in the fight to keep a casino from going in across the street from several thousand village homes.