Please, as soon as you can, leave this man. Emotional abuse is still considered domestic violence, and you also said "shoving me to the floor" - that's physical abuse, though you may argue "too minor", it still counts. I'm very worried for you that it might escalate further. Moreover, I'm worried for your son watching his mother be abused like this and if he may be abused too. I'm also in complete shock that your family would find this acceptable... I have no kind words to say about that, it's no less than victim shaming.

An old friend of mine has a father who is quite horrible as well. His mother only got the courage to leave last year after enduring so much abuse. Both him and his sister have endured a lot of abuse, if not for him stopping his father multiple times both his mother and sister would have been much worse off. His mom had family she went to go stay with in another state and filed for divorce and a restraining order from there.

There are resources that can help. I checked on Google a bit, specifically for New York, and there are two links I thought I'd give you that you may find useful:
1. This group seems like the main one in NY for this - Safe Horizon | Domestic Violence
2. This page has a lot of info on how things typically go - Domestic Violence - New York Divorce Source
From what I'm reading there, you don't need to be physically assaulted and have police reports and whatnot, you just need to be able to back up your claims with dates and times with as many details as possible.