Word for logical fallacy of including a debatable proposition in a list of truisms

Is there a word for the logical fallacy of including a debatable proposition in a list of truisms?

Sometimes a salesman or a politician or whatever will toss out a string of statements that he knows the audience will agree with, so they're all nodding their heads and saying yes, of course. Then he tosses in a highly questionable statement. To make a deliberately oversimplified and silly example:

And as we all know, it's a good thing to love your mother. And I'm sure you all agree that chocolate tastes good. And we all know that all Ruritanians are stupid. And of course no one wants to get cancer ...

The idea is that you get the audience agreeing with you, they think you're "one of them" because you're obviously right or on their side on so many questions, and then you slip something in and you hope they'll just keep nodding yes, or if they question it, they'll think, "Oh, does that go with everything else he just said? I guess so."

It's not necessarily a "non-sequitur". I'm not looking for cases where the speaker presents a logical sequence of steps and one of the steps isn't valid. Rather, I'm thinking of cases where he just throws a bunch of ideas together, with no connection other than an implied, "These ideas all go together" or "These are all things that we all agree on" or "These are all things that are obviously true."

I think it's a form of false analogy, in that the salesman presumably hopes his audience are dumb enough to think that just because he surrounds his questionable statement with irrelevant but undisputed truisms, the questionable statement somehow becomes "true by association".

There is no logical fallacy here because logic is not even being attempted. As the OP says, "I'm not looking for cases where the speaker presents a logical sequence of steps and one of the steps isn't valid." It is more a rhetorical device.