#4 - If you don't think they are blamed for all the problems, see #1 and #2 above.#1 - Palestinians aren't trashed 24/7 unless Hamas is doing it.
#2 - Again, they are not treated as "sub-human" unless Hamas is doing the treating.
#3 - They are not to blame for all the problems but certainly are for most of their own problems. Decades of poor choices tend to create a legacy of problems.