Defamation is a form of speech which is:

The First Amendment ensures our freedom of "speech." This includes:

For expression to be "obscene" it:

Christopher walks into the office where he works one day and decides he has had enough of his supervisor's antics. He uses company supplies to construct a small picket sign and walks up and down the hallways carrying the sign (which reads "Management Unfair to Labor") and chanting "What do we want? More choices of soda in the kitchen and fewer company e-mails about dress codes! When do we want it? Now! What do we want? More choices of soda in the kitchen and fewer company e-mails about dress codes! When do we want it? Now!" He is stopped by security, escorted from the premises, and summarily terminated from his position. He sues for wrongful termination and defends his actions by appeal to the first Amendment. What is the likely result of his First Amendment claim?

The law firm of Codd & Cooney is growing quickly, and has had its best year yet. In order to thank its many clients in the community, the firm buys a full page in the local paper on which is written "Codd & Cooney would like to thank its many clients for their loyalty and for choosing Codd & Cooney to represent your interests. We hope to be able to continue to serve the community for many years to come." Contact information and a list of the firm's attorneys is included at the bottom. Is this commercial speech?