From shooting a US president to show off to squatting at their homes for a week, we take a look at the scariest, wackiest celebrity stalkers. Subscribe for more .\r<br>\r<br>\r<br>\r<br>From killing John Lennon to stalking Justin Bieber, we count down 10 Scariest Celebrity Stalkers. Subscribe to MindChop by clicking here: .\r<br>\r<br>\r<br>\r<br>Read more here: Follow us on Twitter: 10 Creepiest Celebrity Stalker Stories Some fans take their obsession .
