Tacitus describes the circumstances surrounding the murder of a slave master by one of his slaves. (
http://www.umich.edu/~classics/programs/class/cc/372/sibyl/db/Tac-Ann-xiv42to45.html
)
Tacitus's description of how Augustus persuaded the people of Rome to accept the demise of the Republic. (
http://www.fordham.edu/halsall/ancient/tacitus-ann1a.html
)