The jihadi terrorism in Turkey is
fueled
partly by Erdoğan's support for Turkish Islamists, and partly
by foolish purges of officials responsible for security.
When the PKK attacks the forces of the state, that's not terrorism;
that's rebellion. There are some civilian casualties, but the PKK
does not target them. They are what the US calls "collateral damage".
There is no way to fight and completely avoid civilian casualties.
What the Geneva Conventions require, for the US or for the PKK or any
other combatant, is to make sufficient efforts to avoid and minimize
them.
I can't judge whether the PKK makes a sufficient effort, but it is
pretty clear that
the
Turkish state isn't trying to.
It's a shame Erdoğan
terminated
the many years of cease fire with the PKK.