RED LION, Pa. — Signs and flags emblazoned with the phrase “Let’s Go Brandon” and the stronger-language phrase it substitutes for aren’t an uncommon sight in Central Pennsylvania yards and on cars. Flying a flag with the “F” word on it offends some, while others, like Melissa Low of Mount Wolf, are concerned about its impact on kids. “No matter your political opinion, I don’t think it needs to be that vulgar,” she said. One can debate whether the phrase is in bad taste, but there’s likely no legal basis to remove them. Free speech does have some limits;...