It aint easy being Kufr.

Question: What does this mean in arabic?

Answer: It means Kufr.

Kufr is the Muslim term for infidel, unbeliever, apostate, heretic... essentially all those who are non-muslim.

It is a term that applies to those who are enemies of Allah and are thus targets of terror.
Look at the picture above. Is this a coincidence? I think not. Besides a prediliction for the same costume the two groups pictured have the same anti-semetic hatred.

Islaam.com lists the major types of unbelief or unacceptance of Islam; which one are you guilty of?

The Qu'ran uses the word Kufr to denote people who cover up or hide realities. The Qu'ran uses this word to identify those who denied Allah's favors by not accepting His Dominion and Authority. Kufr thus is an antonym for Iman or disbelief in Allah and a Kafir is a non-believer. This type of Kufr is called AL-KUFRUL AKBAR or major kufr. There are many types of Al-Kufrul Akbar

1. Kufrul-'Inaad: Disbelief out of stubborness.
2. Kufrul-Inkaar: Disbelief out of denial.
3. Kufrul-Kibr: Disbelief out of arrogance and pride.
4. Kufrul-Juhood: Disbebelief out of rejection.
5. Kufrul-Nifaaq: Disbelief out of hypocrisy.
6. Kufrul-Istihaal: Disbelief out of trying to make HARAM into HALAL.
7. Kufrul-Kurh: Disbelief out of detesting any of Allah's(swt) commands.
8. Kufrul-Istihzaha: Disbelief due to mockery and derision.
9. Kufrul-I'raadh: Disbelief due to avoidance.
10. Kufrul-Istibdaal: Disbelief because of trying to substitute Allah's Laws.

Here are a few more links to Kufr related information:

The Summit of Evil in this world
25 acts of Kuf that nullify one's belief in Allah