"Ah, why shouldn't we show our colors?" said Mrs. Finnigan. "You should see what the Bulgarians have got dangling all over their tents. You'll be supporting Ireland, of course?" she added, eyeing Harry, Ron, and Hermione beadily. When they had assured her that they were indeed supporting Ireland, they set off again, though, as Ron said, "Like we'd say anything else surrounded by that lot."
"I wonder what the Bulgarians have got dangling all over their tents?" said Hermione.
"Let's go and have a look," said Harry, ...
I can't figure out what Ron meant by saying "Like we'd say anything else surrounded by that lot". It seems to me that it isn't relevant to the context at all. How should we understand it in this context?