Re, “What killed off the dinosaurs”? easy. Taxes. The predecessor to the Democrats were the Tyrannosaur Rex, which is what the Democrat Party came from. Tyrants tax their people to the point of extinction.
Ergo, dinosaur “Tyrannosaur Democraticus TaxAndSpendus” drained the “swamp” of all the “green” and caused all the dinosaurs to die out, much like their successors after the crime, the DP and Obamasorous tried to do to Healthcare, free enterprise, esp. the energy industry, and the American defense establishment
Tax them more and starve what works. Obama and the Dems learned well from their Tyrannosaurus ancestors.
Ironically, the K-T impact killed off whole taxa.