All

"Not all Muslims are terrorists, but all terrorists are Muslims" line

A common line, there are some serious problems with this type of thinking.

No, not all terrorists are Muslim

Some are even listed on RW-Infopedia.
rw-infopedia.pbworks.com/w/page/4604429/Terrorism
rw-infopedia.pbworks.com/w/page/4604430/Terrorist%20Organizations
rw-infopedia.pbworks.com/w/page/4604431/Terrorists
rw-infopedia.pbworks.com/w/page/4604266/Level%203%20Violence

rw-infopedia.pbworks.com/w/page/133094115/White%20Nationalist%20Terrorism

Excluding the things violent non-Muslims do as terrorism

This can really be seen through blaming non-Muslim violence on mental illness.
rw-infopedia.pbworks.com/w/page/117933195/Blaming%20non-Muslim%20violence%20on%20mental%20illness

Excludes Muslim victims of terrorism

Constructing a false dichotomy of Muslim offender vs non-Muslim victim forgets the fact that Muslims are also victims of Islamist terrorism.

rw-infopedia.pbworks.com/w/page/117936840/%22Not%20all%20Muslims%20are%20terrorists%2C%20but%20all%20terrorists%20are%20Muslims%22%20line

cococo.pbworks.com/w/page/146988087/%22Not%20all%20Muslims%20are%20terrorists%2C%20but%20all%20terrorists%20are%20Muslims%22%20line

All