I don't agree. If someone suggests violence towards a group of people the police should act. It may be immaturity and insecurity driving it but if so those would be factors in a decision whether to charge and/or in mitigation post conviction. Immaturity is not a shield against the law. At the...
Depends. If someone simply said: "Is it just me or are there are gays everywhere?" - the main body of Gray's tweet - then it's hard to imagine the speaker being arrested.
But if the speaker also incorporated what Gray's saying with the hashtags, so "Is it just me or are there gays everwhere...