A super market app on your smartphone (which was installed for coupons) pops up a notification on Tuesday to remind you to get condoms. Based on your history it knows you pick them up on the way home (it's date night).
Your wife gets personalized discounts on sanitary pads on the 12th every month because it knows her cycle based on transaction history.
A pro-life organization purchases whole sale data from one of the analytics firms and harasses those who get the morning after pill.
At this point it's too late. As a consumer you have no choice, there is no competition left in the market place that doesn't do this.
If journalists make a big noise about it at some point the chains argue this subsidizes the price of basic produce which directly helps those on low income. Now the message is if you value privacy, you ~hate the poor~.