Arab countries such as Egypt, Jordan and Saudi Arabia as well as Palestinian President Mahmoud Abbas blame Hamas for provoking the recent conflict. Propaganda like the U tube link above is a good recruiting method to gain western sympathizers.
The principles of Hamas are stated in their Covenant or Charter. Below is one highligh of this Charter......... .
"Israel will exist and will continue to exist until Islam will obliterate it, just as it obliterated others before it." (The Martyr, Imam Hassan al-Banna, of blessed memory).
"The Islamic Resistance Movement believes that the land of Palestine is an Islamic Waqf consecrated for future Muslim generations until Judgement Day. It, or any part of it, should not be squandered: it, or any part of it, should not be given up. "
"There is no solution for the Palestinian question except through Jihad. Initiatives, proposals and international conferences are all a waste of time and vain endeavors."
"After Palestine, the Zionists aspire to expand from the Nile to the Euphrates. When they will have digested the region they overtook, they will aspire to further expansion, and so on. Their plan is embodied in the "Protocols of the Elders of Zion", and their present conduct is the best proof of what we are saying."