What's the meaning of "malign star"
It's a docu film about Frank Sinatra's mafia background.
When mentioning the Italian mafia in a small city of US, the narrator said:
“Its malign star was Al Capone.”

Question

What's the meaning of "malign star" 
It's a docu film about Frank Sinatra's mafia background. 
When mentioning the Italian mafia in a small city of US, the narrator said:
“Its malign star was Al Capone.”

Answer

Some people believe that stars influence human behavior. A malign star is an evil star.

Another way to express the idea in the sentence would be:

Its evil influence was Al Capone.

Answer

Famous people with evil mind.

Answer

Al Capone was an evil mafiosi  and was responsible for the deaths of many  people, but to others he was a hero or a star.

Answer

It's seems to me that bad person can't be a star///that's why great badman is a  malign star

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