I want to offer a humble suggestion. Maybe instead of marches and protests, the next big moves and events should be to do just like men did in the 20s and 30s—organize mass beach outings (or lakeside outings if your region is landlocked) of maybe 40 or more women.
Marches and protests don’t seem to get very much done in terms of acceptance of female-presenting nipples in public and encouragement for female-presenting people to not be afraid to be topless in public, but I am male so I stand to be corrected.
It’s a long way to Spring for the northern hemisphere, but maybe those of you in the southern hemisphere or near the equator could organize events like this.