The cream-colored stretch Rolls-Royce limousine crawled past the angry crowds. The queen of Thailand smiled.

But what Queen Suthida Vajiralongkorn Na Ayudhya saw Wednesday, on a road in Bangkok that has been used for royal processions, may have been sobering.

Anti-government protesters yelled "my taxes!” referring to their personal contributions to royal coffers. The police held them back but could not hide the demonstrators’ defiant salutes.