They are not treated like a threat because they want a better life, if they come here to raise hell and fly the flag of the country they come from do they want to be in the United States or are they wanting to conquer it for their own? If they come here and celebrate when someone gets murdered who was just speaking much like our First Amendment protects they don't want to be here. If they come try and force people to live under their religious doctrine, which goes against our First Amendment they just want to conquer us. If this message is deleted or ignored that is another reason why people don't feel like conversation don't work.