Question

why is hamlet bothered by the fact that one of the actors is abled to read about king Parian death with such passion?

Answer 1

There are two kings in Act One; the dead one and the living one. The king (his father) gives Hamlet two commands: the first is to revenge, the second is to remember him! These commands are appropriate to the context of the play in that there was a crisis with the political rule in England at the time.