Interesting that Paulie from the Sopranos also used to hold his hands in the same way and for the same reason…except he learnt it in prison! https://youtu.be/pg_yTy5qIIg

There's some good examples in this video around the 2:00 mark. For context I believe there's a political rally nearby.

https://youtu.be/TAaD_qihlQA