Sentence:  This dinner was the start of a new blatancy in the relationship between the gangs and the politicians , which , prior to 1924 , says Pasley , `` had been maintained with more or less stealth '' , but which henceforth was marked by these ostentatious gatherings , denounced by a clergyman as `` Belshazzar feasts '' , at which `` politicians <WSD>fraternized</WSD> cheek by jowl with gangsters , openly , in the big downtown hotels '' . 
Meaning of the word marked with <WSD> tags:  be on friendly terms with someone, as if with a brother, especially with an enemy