Conversation so far:
Who was the fabulous Kangaroos?
Costello and Heffernan debuted as "The Fabulous Kangaroos.
Where they a international team or did they travel?
The Kangaroos wrestled in the United States, Canada, Asia and select tours of Australia and New Zealand.
Did t hey win any titles?
CANNOTANSWER.
Are there any other interesting aspects about this article?
August 1958, The Kangaroos, or "Kangaroo Men" as they were billed, nearly caused a riot in Madison Square Garden.
How long did the kangaroos stay together?
In June 1965, The Kangaroos lost to Don Leo Jonathan and Jim Hardy and then split up.
Can you share anything else about the article?
Costello and Heffernan started working for Dory Funk's NWA Western States promotion based in Amarillo, Texas.

Question: Why was there nearly a riot in Madison Square Garden?
Self-contained rewrite: Why did the kangaroos nearly cause a riot in Madison Square Garden?