You can protest an appraisal you think missed the mark, but you need to be able to back it up. 

In Texas, protests need to be filed by May 31st and most counties have access to online appraisals to check the values

Anti development, anti property owners, anti tech, anti Google buses* protests left and right.

FB users searching for rentals tend to be younger and of the same mindset that staged the 1% rallies protesting the rich while blogging on their $1200 Macbook Air, living in their parents' basements and wearing designer Skinny Jeans. 

Then, after that, there may be protests.  

Just curious, does anyone know of a law firm in Texas that will handle property tax protests/appeals?

@Justin Sheley  I have not yet protested my properties taxes in Rockford yet.

I have sent the protest paper work in and they have come back with a date have hearing.  

Also, most HOAs have a process in place where you can formally protest a fine - such as a hearing before the board.

"Although the working poor of New York would explode into the worst riot of American history in 1863, these people did not provide the cutting edge of labor protest in the antebellum era.