Harassment on the subway

I was standing on the G local train in NYC. While I was standing, suddenly the passenger sitting in front of me (female, age around 30-40) started to shout racist slurs at me. "GET THE F-CK OUT OF MY FACE YOU F-CKING CH-NK, YOUR STANDING POSE IS MAKING ME F-CKING UNCOMFORTABLE. OTHERWISE I WILL SMACK YOUR F-CKING CH-NK FACE." I refused to move and indicated the subway is a public space and she can try to commit violence against me, but I will report her to the police. Then she kept saying racist slurs and stood up, trying to squeeze me away from the subway standing stick perhaps to make me lose balance and fall. I still refused to move because the subway is a public space and her racist behaviors would not bow me down. In the end, security was called but they actually told me to back away because they DO NOT care about hate crimes and racist people. Instead, they just want to end any arguments as soon as possible. I was actually shocked by the inaction of the MTA security officers. I guess they allow this racist stuff because they do not care. The racist passenger was also thanking the security and acting like I was the one who was being aggressive. Three of my friends were on that same train and they all witnessed this incident.