When the DNC heavily favors one candidate and gives that candidate unfair advantages (like having the unique ability among candidates to decide how DNC funds are spent), unbeknownst to other candidates and their campaigns, it's got to be called something. If you won't call it corruption and you won't call it rigging and you won't call it conspiring, what would you be willing to call it?
Sanders isn't a member of the Democratic Party. The DNC owes him nothing. It would have been corrupt for the DNC to spend its resources backing a candidate who was not a registered Democrat.
