To be fair, there are 2 rainbows on that picture. And, again in fairness, the picture DOES show what appears to be a lesbian couple with 2 kids (the person wearing the badge certainly seems to be female, there is the slight hint of breasts as shown by shadowing).
I'm not sure what the problem is of course, but I thought it only fair to point out the raging homosexuality being paraded on their front page.
What next, a free copy of the Grindr app with every Pi? Oh think of the poor children.