"lock that bitch up" - Her gender is irrelevant to her corruption so it does not make sense for it to be here.

People are not chanting "lock that bitch up". They are chanting "lock her up".

"crooked Hillary" - She has been under active investigation for almost the entire campaign, and the Clintons have been their entire careers.

I don't see any problem with this. As long the same standard applies to both candidates.

Noting that it has all been Republican-driven and hasn't yet found a single thing in decades. But it is definitely an excellent "poison the well" tactic.

No illegal email servers then?

Do you agree that (1) investigation is not the same as conviction, and (2) that repeating the phrase "crooked Hillary" ceaselessly is a marketing tactic designed to encourage a belief that Clinton is a criminal in order to undermine her legitimacy as a candidate?

No.

> (2) that repeating the phrase "crooked Hillary" ceaselessly is a marketing tactic

Yes.

> designed to encourage a belief that Clinton is a criminal

No, it brings to light the fact that she was under investigation and has many shady dealings in the past. It is to raise doubt. To be a criminal she must be convicted.

> in order to undermine her legitimacy as a candidate?

Partly. I think more so to raise doubts about what she would be like in power.