So, I’ve seen a variantion on this a lot:

• It’s Thanksgiving.
• Bob wants some delicious ice cream to put on his pie.
• He forgot to buy it before Thanksgiving
• So he goes to the grocery store to get some.
• He sees some people working in the store
• Bob feels guilty because those people don’t get to be home with their families like he does. Or offended that people are dishonoring the holiday by working on it.
• So he says something like “Working on Thanksgiving! That’s terrible.” Or “Wow, they have you working today? On a holiday?!”

This is obnoxious. If you buy stuff in a store on Thanksgiving, don’t do this to the people working there. The store is open because people, including you, want to shop in the store. The people who are working on Thanksgiving are making it possible for you to buy things on Thanksgiving. It’s important to be respectful about that.

If you have a problem with stores being open on Thanksgiving, consider not shopping on Thanksgiving. And consider taking it up with the owners or corporate office. Don’t take it out on the people who have to work on Thanksgiving. It’s not their fault, and they’re very likely not doing it willingly.

If you want to say something to acknowledge the situation, say thank you. Don’t dump your feelings of guilt on someone who is working on Thanksgiving – that won’t do them any good. Instead, either just buy the stuff normally, or say something like “Thank you for opening. I really appreciate being able to buy these things.”

Short version: Be respectful towards people who work in stores on Thanksgiving. Don’t judge them and don’t dump guilty feelings on them.