The Secret Service says it does establish 'public viewing areas' to protect dignitaries but does not discriminate against individuals based on the content of their signs or speech. 'Absolutely not,' said Tom Mazur, a spokesman for the agency created to protect the president. 'The Secret Service makes no distinction on the purpose, message or intent of any individual or group.' Civil libertarians dispute that. They cite a Corpus Christi, Texas, couple, Jeff and Nicole Rank, as an example. The two were arrested at a Bush campaign event in Charleston, West Virginia, on July 4, 2004, when they refused to take off anti-Bush shirts. Their shirts read, 'Love America, Hate Bush' ... The ACLU found 17 cases since March 2001 in which protesters were removed during events where the president or vice president appeared. And lawyers say it's an increasing trend.