I think you just used the wrong words, they overreacted and you didn’t explain what you actually meant properly.
Your best bet is to simply explain you made a mistake with your wordings and that you actually meant that you don’t want to share a picture of other people without their approval as it’s a matter of someones privacy.
This should clear the air and give an opportunity for those that overreacted to apoligize aswell and even if they don’t, you can just choose to let it go and move on.