What do dinasours and clams have in common?

I saw 2 T-Rexes standing side by side.
Then I saw 2 giant clams with teeth, 20 stories tall.
I was standing beneath the 2 clams, the first one wanted to devour me but he couldnt.
I felt he was allready defeated, I felt he represented the economy.
The secound clam, bent over as if to devour me but he was stopped.
This clam represented Revolution.

I think this is self explanitory, but can anyone confirm what it means.