Examples: LG Paladin sees all creatures from Avernus as monsters, has no problem killing 'innocent' tieflings on sight.
Ah yes the classic 'the good paladin is actually the evil one' trope. Seriously it only works if you abandon all reason, try to use wordplay to 'game the system' and have no common sense imo.
Good and evil are true concepts in dnd. Murder is still evil, regardless of whatever the one doing it believes it or not. Killing unarmed civilains regardless of race is kinda frowned upon by good aligned deities. Neutral ones could be ok with it depending on the curcumstances under which they occur.
Except that in DnD creatures from the hells are very much evil by nature, and much like the undead, are considered 'kill on sight' by a lot of gods. Where is the line for murder? If a Lemure hasn't killed anyone yet, but you kill it anyway, have you committed murder? How many murders does it take for you to be evil?
I love playing Paladin, but I doubt I'd ever play one that'll mindlessly go murdering Tieflings. That doesn't make any sense. I could imagine feeling pity for the thiefling. After all, it's birth was tainted by evil, which will probably disadvantage the person in many ways. However, if this tiefling has a family and is a constructive law-abiding part of it's society there is no reason to go as far as murder! Perish the though! Murder in itself is a heinous crime! Why would I even consider it? No, prayer, blessings and compassion will be the tools that'll free this thiefling from it's bonds to the infernal. Let us pray!
Of course, I'd extend the same leniency to the Lemure if there was any point to it. It's a damned soul eternally bound to the hierarchy of the nine hells. All help that could've been provided has come to late! This is no being of agency and choice, It's a devil. Lowest of the servants of hell, true, but a devil non the less. Banish it back to whence it came and be done with it!
