Shooting someone is not the only harm that can happen. There are countless assaults (domestic, sexual, verbal, etc) every year that occur due to extremism such as being an “incel”. Also you sound paranoid and have offered no evidence what you say is true. If you really are being spied on by the government the only way to stop that is to destroy your electronic devices (drill holes in the harddrives), move as far as you can (preferably russia or china), and never post publicly on the internet again.
What happens if you just send the example selfie instead of your own? Do they actually check it?