Don't Withhold Rent or Change the Locks. If your landlord is violating your privacy rights, your answer lies in the law (as in lawsuits and moving out), not locksmiths or rent withholding. Never change the locks without permission.
Social mobility is the movement of individuals, families, households, or other categories of people within or between social strata in a society. It is a change in social status relative to others' social location within a given society.
The upper middle class is a sociological concept referring to the social group constituted by higher status members of the middle class. This is in contrast to the term lower middle class, which is used for the group at the opposite end of the middle class stratum, and to the broader term middle class. There is considerable debate as to how the upper middle class might be defined.