The "Team Up" mod features such a "mini-game", PedRiot-like. Every peds on the game receive random weapons and guns, so they start fighting each other, also attacking the player. But some random peds are out allies, so they can also follow us (even on cars).
BTW, you might notice the video quality is now better than before. I changed my HD7870 GPU for a GTX970, so i'll try recording my following videos on 1080p (anyway i might upload on 2k, so they see better on YT).
Download Team Up here: https://www.gta5-mods.com/scripts/team-up
If you like the Niko Bellic skin, you can get it here: https://www.gta5-mods.com/player/niko-bellic-ped-thengclan-lunchxbles