Acting like PETA freaks would be because people are concerned about the “poor little wild mouse” this is not the case, people are concerned about the health of the OP snake.
Feeding wild rodents can be very hazardous. The worth that can happen is the death of the snake in question, too bad you cannot see this and feel the need to call people PETA freaks which is uncalled for!
People are not mad about YOUR rant they are trying to educate you about the fact that it's not ok to feed wild rodents.
People also try to educate you about what PETA is since you do not seem to know what they are really about, judging by the way you use their name as an insult.