I didn't mean they booed in the stadium, I am talking about the negative reaction in the aftermath. It was just so expected which is why it was so important for England to have won that match. They'd have bought themselves some leeway. But as soon as something goes wrong...wham, the fans are on their case again. It took an age to get people on board - after they practically dominated their qualifying group - and, again, it falls to ****s. The players know all this too well and you can see them stressed out on the pitch.
IMO, if you're a real fan you support till the end. Their reactions aren't gonna help the team any. Support them, let them concentrate with what is going on on the pitch. When it's done, then go lambast the **** out of them. But during/inbetween important games? There is no justification IMHO.