I noticed that as well on Friday when I re-watched the first two before going to see the third. And plain as day, we have a guy eating another guys face off during the chemical attack.

Another thing I noticed when watching the second one was the number 22. It's the number of the school bus district written on the side of the bus. As well, Harvey Dent's coin was minted in 1922. 22 is the Master Builder, and the "most important number" in numerology. Wonder what it means...