These thugs should be watched at the very least. Trump is a presidential candidate, you don't just run around making these kind of threats.
And why not? Have you forgotten the conservative position on "Second Amendment remedies"? The right to bear arms is, according to conservative teaching, not just something for deer hunters and hobbyists, its fundamental purpose is to allow an oppressed citizenry to rise up against tyranny and assert their unalienable rights.
Apparently these "thugs" (your term) have come to the conclusion that Mr. Trump and his followers represent a direct threat to them in violation of the US Constitution. I understand that you do not agree, but that really is beside the point, Time to water the tree of Liberty with the blood of patriots and tyrants. Who could condemn such a noble sentiment?