What is the origin of the idiom "not give a sucker an even break" and when to use it?

The idiom "not give a sucker an even break" likely originated in American slang during the early 20th century, particularly in the context of confidence tricks and swindles. The term "sucker" was used to refer to a gullible or easily deceived person, often someone who could be easily cheated or taken advantage of. In this context, "an even break" means a fair and equitable opportunity. It is used to describe situations where someone is being taken advantage of or deceived, especially when the person being deceived is vulnerable or unsuspecting