...n of the laws of the Commonwealth, for the basest of all purposes,--slave-trading, selling a free man into bondage, that State Street and Milk Street might make money. Next we come to that man [ John P. Bigelow ] who stood at yonder door, looking on, while George Thompson was mobbed from this platform; who, neither an honorable Mayor nor a gentleman, broke at once his oath of office and his promise as a gent...