If, during an arguments, someone says "I am going to knock your block off!" does it really mean the person is going to come round with a baseball bat? How many times has "I'm gonna kill you." lead to an actual murder? Does "Shut up you moron before I shut you up." really mean that the person is going to be struck dumb?
99.99999% of the time these are nothing more than words - empty words.
When a person gets up on their soapbox to argue for their cause do they honestly expect the whole world to agree th them?
The latest farce is the Twiter case of Caroline Criado-Perez. She wanted more representation of women on banknotes. Some of those who disagreed with her sent tweets 'threatening' to rape her. A 21-year-old male idiot has been arrested.
But hang on. Is there the remotest evidence that his words, stupid and nasty though they were, actually constituted a threat, or were they nothing more than the ramblings of a drunk in a pub trying to look 'big' in front of his mates?