19. James Coonan
James Jimmy Coonan was a mobster who operated in New York. James was also a racketeer who decided to form an organized group of criminals and become a gangster. This was for the purposes of avenging his father’s death who was killed by another mobster who operated in the 1960s, Mickey Spillane.
![Worst, Most Feared, Biggest Gangsters in the World](https://imonkey-blog.imgix.net/blog/wp-content/uploads/2017/02/11114611/shutterstock_365427041-750x422.jpg?auto=fortmat&fit=clip&expires=1770768000&width=480&height=269)
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