Are Presidents and Prime Ministers allowed to talk bad about opposition partySince the Prime Ministers or Presidents in a democracy are generally elected, it wouldn't be wrong to say that they represent the whole nation. Should a person of their rank slander/trash talk/cuss the opposition party? Will they be right doing so?
Democracy, though was practised first by the Greeks, atleast through historical evidence, Romans were the ones who perfected it. Roman Republic was so perfect that most of its layout still exists in form of Senates of USA. Senate is often fractured into two parties, Populares and Optimates. Populares were a group that wanted power vested in people. Optimates favored power vested inside senate, hence aristocracy. Isn't this how the modern democracy works? Republicans and democrats of USA are an example.
But look at today's politicians. We see Presidents and Prime ministers of Republic and democratic nations who would slander, cuss and undermine opposition party members. Consul system survived well into the ADs. After the death of Mark Antony alone, we see the permanent emergence of emperors in Rome. Don't you think something equivalent to that can be obtained? Where an individual doesn't rise above the law? Unchecked majority or unchecked power will always lead into anarchy.