On Facebook, Jaden Ramos has been sharing photographs of his father, Rafael Ramos, one of the two NYPD officers slain yesterday. "I will always love you and I will never forget you. RIP Dad," he wrote.

"Today is the worst day of My Life," reads Ramos's first post from yesterday. Ramos's father Rafael was 40 years old. Wenjian Liu, the other officer, was 32. Jaden continued:

Today I had to say bye to my father. He was their for me everyday of my life, he was the best father I could ask for. It's horrible that someone gets shot dead just for being a police officer. Everyone says they hate cops but they are the people that they call for help. I will always love you and I will never forget you. RIP Dad.

Last night members of the NYPD in attendance at Woodhull hospital turned their backs on the mayor as he passed on his way to deliver a press conference with Commissioner Bratton.

As Ramos and Liu's bodies were taken away, officers lined up to salute the ambulance, and impromptu memorials have sprung up around the city.

[Images via Facebook and AP Images]