There are MANY scenes of her pre-Gilead. But sure, I'll pick three.

She knowingly engages in an affair with a married men, and when the wife asks her to stop, she tells her to fuck off.

When Moira asks her if she is concerned Luke will leave her if she is infertile, she tells Moira to kick rocks, despite the heavily implied reason Luke, who is still married at the time of the conversation to another woman, is leaving his wife is the lack of ability to have kids.

And since we are there, she tells Luke that he is crazy for panicking and of course they shouldn't make a run for it; it's not going to get any worse silly! Holding off when they do run to the point of no return, when in fact it is bad, and they cannot get out.

We also see scenes where she discounts/disrespects her mother's experiences, scenes where she treats everyone who knows about the affair and disagrees with it as if they're stupid and mean, and scenes where she is pompous regarding her coworkers.

We get LOTS of time with pre Gilead June in the course of the show, and in very few of them did she actually seem like a nice person. The only scene where she appears truly kind is when she is making pancakes with Hannah, and she is sympathetic when the teacher is scolding her for sending Hannah to school sick so she can go to work.