He approves ...

"And they also were strong supporter of Palestinian struggle for liberation. Deniz Gezmiş personally fought against zionist invasion in the ranks of Democratic Front For the liberation of Palestine. And here his ID card.  (The story of 68 movement and Palestinian struggle is interesting. Some leftist students were killed when they were fighting in Palestine or in Lebanon, but nobody knows them.)"

What  kind of "fighting" can the DFFLP boast?

Here is an example:

The Ma'alot massacre^[1] was a terrorist attack in 1974 which included a two-day hostage-taking of 115 people which ended in the deaths of over 25 hostages. It began when three armed Palestinian terrorists of the Democratic Front for the Liberation of Palestine^[2] entered Israel from Lebanon. Soon afterwards they attacked a van, killing two Israeli Arab women while injuring a third and entered an apartment building in the town of Ma'alot, where they killed a couple and their four-year-old son.^[3] From there, they headed for the Netiv Meir Elementary School, where they took more than 115 people (including 105 children) hostage on 15 May 1974, in Ma'alot. Most of the hostages were teenagers from a high school in Safad on a Gadna field trip spending the night in Maalot...
Ultimately, 25 hostages, including 22 children, were killed and 68 more were injured.

 No surprises there.