Washington State Human Rights Commission
All people of Washington have certain rights and responsibilities under the Law Against Discrimination (RCW 49.60). Under the law, everyone has the right to be free from discrimination at work, in housing, in a public accommodation, or when seeking credit and insurance. Discrimination occurs whenever we treat someone differently and deny him or her equal treatment or access because of: their membership in a Protected Class.
Protected Class Includes:
Race/Color
National Origin
Creed
Sex/Pregnancy
Sexual Orientation/Gender Identity
Veteran/Military Status
The presence of any sensory, mental, or physical actual Disability or perceived Disability
Use of a Service Animal
HIV or Hepatitis C
Marital Status (except in public accommodation)
Breastfeeding (in public accommodation)
Age (40+, employment only)
Families with Children (housing only)
State Employee Whistleblower
A business open to the public constitutes "public accommodation". In this case the florist provided flowers for opposite-sex weddings, but refused to do so for same-sex weddings. Therefore she was guilty of discrimination on the basis of sexual orientation, which is clearly illegal in Washington. She was even given the opportunity to work with the state and correct the situation, but she refused. So it went to court and the court easily ruled against her. Now she's crying that her business is being ruined, I guess hoping that most people won't pay attention to the fact that she was offered a way out but refused.