Rockstar! We Have A Problem...
A GTA 5 Update has caused a problem, Rockstar has accidentally added a new god mode glitch and it's now taking over GTA Online sessions. This GTA 5 god mode glitch is solo and super easy to do, it came with the GTA Online update that introduced the taxi business. GTA 5 Glitches like this one bother a lot of GTA Online players and Rockstar should fix this. Hopefully this GTA 5 Online god mode glitch is patched soon.
Thanks to GhillieMaster for showing how to kill god mode players in GTA Online: / @ghilliemaster