Raider Troubles

Raider Troubles (displayed as Raider Troubles at (Location Name)) is a Minutemen radiant quest in Fallout 4.

Detailed walkthrough
After joining the Minutemen, this quest can be periodically obtained when talking to Preston Garvey or listening to Radio Freedom. The Sole Survivor is informed that an allied settlement is having trouble with some raiders, and is asked to help the settlement deal with them. Alternatively, the quest may be obtained directly from a settler even if the Sole Survivor has not joined the Minutemen (this occurs more frequently at unowned settlements).

To proceed with the quest the Sole Survivor must travel to the settlement and talk to their leader, who will give the details: a large group of raiders has been harassing the settlement and causing trouble. The settler will point the Sole Survivor to the raider hideout and ask that they be eliminated for the safety of the settlement.

To complete the objective, the Sole Survivor must travel to the raider hideout and eliminate the marked raider. Unmarked enemies do not need to be killed to complete the quest. With the threat neutralized, the Sole Survivor can talk to the settler from before to receive thanks and a reward of ~100 caps, as well as ownership of the settlement (if it was not already owned). If the quest was given by Preston Garvey, the Sole Survivor must report back to him to turn in the quest; it will be completed immediately upon receiving the reward otherwise.

Bugs

 * If you start Under the Collar in the Nuka-World add-on and must collar Bedlam in Dunwich Borers, you cannot kill Bedlam for the Minutemen quest. Use to skip to reporting your success to settlers.
 * No quest marker will appear on raiders inside Back Street Apparel. The quest will not update despite clearing Backstreet Apparel (the usual target raider is situated in the ground level back room with the steamer trunk). Workarounds for finishing this quest are (as with similar Greenskins and Ghoul Problem quests) either killing the quest giving settler or waiting until the timer runs out, though both ways will fail the quest.
 * This can be fixed on PC by opening the console, selecting the dead raider and inputting to kill them.
 * Should you have to help Covenant after completing Human Error and leaving the citizens alive, Jacob Orden will be the NPC to speak to, only he won't have any voice acting. After you clear the raiders, you will not be able to turn in the quest, as he will just comment on your completion of Human Error.
 * The option to say that the targeted location has been previously cleared won't appear, along with the quest marker, preventing the quest completion. Clearing the location anyway won't fix this.
 * If you use a console command to complete the quest there is a chance that it will fail the quest instead of completing it.
 * In certain locations, NPCs might spawn in inaccessible locations (for instance, Roger Warwick at Warwick homestead might spawn inside the water cistern). This bug is shared with the other settlement quests.
 * This can be resolved by using the console command to teleport the NPC in question.
 * The Warwick homestead example can be resolved by building stairs into the cistern and a bell outside of it. Using the bell and waiting for an in-game hour (using the Wait option) will cause the NPCs to spawn near the bell.