@Robert Gentel,
1) The first map is intentionally misleading, or in other words is just a lie. There was no "Palestinian land" prior to 1947. There was a British mandate over the whole region.
2) So the only land that can be called "Palestinian" is on the second map. It was Palestinian for several minutes - until they rejected the UN plan, and joined Syria, Egypt, Jordan, Iraq and Lebanon to attack Israel with the purpose of destroying it. They don't deny this historical fact.
3) The 3rd map is a result of a war that the Arabs started and lost. Same thing happened in Europe when the Germans lost in WWI. Don't want to lose land - don't start wars with intention of eliminating the neighbor country
4) Another lie in map 3 is calling pre-1967 borders Palestinian. That was land occupied by Egypt in Gaza and by Jordan in the West Bank.
5) Map 4 is an intermediate stage of post Oslo agreements when most of the West bank was supposed to gradually be handed over to the Palestinians , as they start fighting their terror groups. Instead they only encourage the terrorists, and teach hatred to kids in elementary schools.
So this poster is just misleading propaganda. I'm not even going into the whole historic argument about a Jewish state being there for thousands of years.
Having said that, I still think Palestinians should have their own state, without any Israelis interfering with their lives. The problem is that it is posters like this that prevent any agreement because it is posters like this that mislead Palestinians into thinking that they are entitled to the whole land, and they shouldn't ever compromise. This sort of thinking keeps them stateless for 65 years now.