Canadian Politics Today

I don't think indoctrination needs to have an 'or else' attached, but only the repitition of ideas with little or no contrary information.

I think this is correct.

"Teaching" would be imparting information or ideas with facts and evidence, where discussion and questioning is welcomed.

"Indoctrination" would be communication of beliefs not supported by evidence, and not be welcoming to any discussion or questioning.  Indoctrination usually involves purposely omitting contrary information.

I think this is why "teaching" has a positive connotation and "indoctrination" has more of a negative connotation.