Hillary may or may not be inevitable, and I would vote for her in the general, but the attempts to marginalize Sanders and his supporters as " crazies" does not sit right with me.
Not at all.
If Sander's platform were enacted into law, all it would do would be to bring the U.S. into closer alignment with other countries in terms of the robustness of its safety net.
Hillary's only really attacked Republicans as this point, and has mostly steered clear of attacking Sanders and O'Malley. Mostly because she doesn't really need to. So I'm not sure where you're getting that she's calling his supporters "crazies"?