With hopes of dispensing the "perfect antidote" to the stock market crash of 1987, Italian-born sculptor Arturo Di Modica spent two years welding a 7,000-pound bronze bull statue designed to capture the resilience of the American people. Under the cover of night and without a permit, he installed his massive Charging Bull directly before the New York Stock Exchange, a gift New Yorkers loved but New York City initially hated. Authorities removed it, but later reinstalled it under pressure at a small public park in the financial district. In the 18 years since, it has become an institution. Then last...