Is the use of civil disobedience warranted in response to laws that some people feel are unjust?

Yes the philosophy behind the american nation is to stand up for what you think is right even if you stand alone. While I'm not saying to start a riot, if after listening to the other groups argument you cannot conform or find a middle ground a peaceful protest to stand ageist what you view as unjust is always a good thing to do. Even if you find out later that your not in the right you've at least opened peoples minds to a new point of view and your self to a new experience.

The constant presence of diseases or infectious agents within a given geographic area or population group. it may also refer to the usual prevalence of a given disease with such area or group. it includes holoendemic and hyperendemic diseases. a holoendemic disease is one for which a high prevalent level of infection begins early in life and affects most of the child population, leading to a state of equilibrium such that the adult population shows evidence of the disease much less commonly than do children (malaria in many communities is a holoendemic disease). a hyperendemic disease is one that is constantly present at a high incidence and/or prevalence rate and affects all groups equally. so probably family history.