Better to proliferate than let a maniacal despot with a monthly habit of declaring his intent to enslave a thriving liberal democracy from being the only one with power.
If it werent for the specific nationality the neonazis were shooting at, the water connected alliance would bomb them for being nazis instead.
Because if nazi militias is your main point of contention I'd need to point you towards the USA for you to take a look as well... Not a thriving democracy either?
However, my point is that having a non-trivial amount of active fascist militias doing things with the support of the gov., alone makes a country not a liberal democracy.
But OP seems to have meant another country ...