The constituion protects the freedom of speech. when is this right not protected

Not to speak (specifically, the right not to salute the flag).

During the paleolithic, hominins grouped together in small societies such as bands, and subsisted by gathering  plants  and fishing, hunting or scavenging wild  animals. the paleolithic is characterized by the use of knapped stone tools, although at the time humans also used  wood  and bone tools.