Why are there separate check-ins for flights to Israel?

I noticed that on many occasions there was a separate check-in line for flights to Israel.

The most recent one is right next to me: at CDG there is a line for everyone and a separate check-in for Tel Aviv (both Easy Jet).

What are the reasons for this? (I saw that case at numerous occasions in different countries, and the singled out flight was always to Israel).

I belive that this has something to do with security, but they are not the only country with such issues.