I'm being stalked on the internet, probably by a intelligence agency

I very much suspect and have good reasons to, that i am being stalked on the internet by a intelligence agency or regular people being paid to stalk me on the net.
This has probably been going on for a while now but it's got more intense lately as an attempt to psychologically break me down. I have had a backdoor installed on previous computers i owned and because it's a intelligence agency involved they have the knowledge to do so and much more.
I had my internet activity surveiled for long periods of time as well had my emails read but they were nothing of interest but i had my facebook account hacked and it didn't end so well, also at the same time i had my phone monitored and they could see my location through a satellite gps, these things didn't end well and i don't want to talk about it because it's shameful for me.

I regulary visit this site and another discussion web sites and there has been a imposter on these same sites with a finnish flag and he/she is using my first name, ( what a coincidence ) and i notice the posts made by he/she are always about encouraging violence against other people and encourages to commit crimes and also about being homosexual and interests in homosexual activities and alternate sexualities and i have also seen one showing pedophilia positively. and this person he/she has almost always used my first name in these posts but i have also seen he/she use a childhood friends name too. it's kind of weird it could only be psychological fuckery by a intelligence agency.

I'm not homosexual or a pedophile and i really hate such people, thinking about having sex with a man or a child makes me feel sick.