An online page from Harper’s Weekly (June 26, 1858):405; “scoundrels”. See below.
The scoundrels it refers to is the “runners” who preyed upon confused new immigrants landing in New York Harbors to entice them to buy various tickets on trains or boats to other US destinations, real or sometimes fake. These runners worked for organiztions that sometimes we’re just cons to get money from newly arrived people.
Not all of course but they were considered a problem that, “in 1855 the commissioners of emigration in State New of York opened a landing depot in Castle Garden” in southern Manhattan. (pg 146, City of Dreams, author Tyler Ambinder, 2016). Castle Garden was a theater prior to its identification with immigration in New York City.