It seems like you're looking more for the word "imperialist" when referring to Israeli treatment of Palestinian Arabs. Apologies if that's all very obvious, but from the back-and-forth you two are having, it doesn't seem like it is.
The Zionist movement is still very clearly using colonial communities -- called settlers -- to try and occupy and control foreign land, inasmuch as the West Bank and the Golan Heights are not generally considered part of Israeli territory. Israel has 500,000 colonists -- 10% of the total Jewish population under their control -- in the West Bank, and their colonial aims are funded and supported by the Israeli public as a whole.
The Zionist movement is very clearly colonial in its origins, and used its relationship with the British colonial power to colonize Palestine. Zionist colonists are a historical fact, and if you like you can argue that they instantly ceased to be in any way colonial the moment they got rid of the British, before instantly becoming a colonial power in 1967 (New motto: "The Zionist movement: Colonialism-free 1950-1966!) I think that's a silly claim, but these are labels ultimately and different people can apply them differently. But to say the Zionists weren't colonial is directly contradicted by the facts and their own words.
Former colonies that still maintain the colonial structure -- with colonists as full citizens, and indigenous people ruled and controlled by the foreigners -- can be considered colonial projects. (If you prefer to say imperialist, say that. Really this is a quibble about words that BM is attached to because he got tired of being proven wrong about every legal, factual and historical particular. The particular term is not especially important; the behavior is.) From the wikipedia page on colonialism(1):
Colonialism is the establishment, exploitation, maintenance, acquisition, and expansion of colonies in one territory by people from another territory. It is a set of unequal relationships between the colonial power and the colony and often between the colonists and the indigenous population.
The UN's Declaration on the Rights of Indigenous Peoples lays out the fundamental rights to which indigenous people are entitled:
Indigenous peoples and individuals are free and equal to all other peoples and individuals and have the right to be free from
any kind of discrimination, in the exercise of their rights, in particular that based on their indigenous origin or
identity. Indigenous peoples have the right to self-determination. By that right they can freely determine their
political status and pursue their economic, social and cultural development. They have the right to maintain and
strengthen their distinct political, legal, economic, social and cultural institutions, while retaining their rights to
participate fully, if they choose to, in the political, economic, social and cultural life of the state.
(http://www.un.org/esa/socdev/unpfii/doc ... ips_en.pdf
Does this colonial situation, in which there is a tension between the rights of the colonizers and the colonized, apply to Israel? Note that while the declaration was supported by "Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Austria, Bahamas, Bahrain, Barbados, Belarus, Belgium, Belize, Benin, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, Brunei Darussalam, Bulgaria, Burkina Faso, Cambodia, Cameroon, Cape Verde, Central African Republic, Chile, China, Comoros, Congo, Costa Rica, Croatia, Cuba, Cyprus, Czech Republic, Democratic People’s Republic of Korea, Democratic Republic of the Congo, Denmark, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Estonia, Finland, France, Gabon, Germany, Ghana, Greece, Guatemala, Guinea, Guyana, Haiti, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kuwait, Lao People’s Democratic Republic, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Mauritius, Mexico, Micronesia (Federated States of), Moldova, Monaco, Mongolia, Mozambique, Myanmar, Namibia, Nepal, Netherlands, Nicaragua, Niger, Norway, Oman, Pakistan, Panama, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Republic of Korea, Saint Lucia, Saint Vincent and the Grenadines, San Marino, Saudi Arabia, Senegal, Serbia, Sierra Leone, Singapore, Slovakia, Slovenia, South Africa, Spain, Sri Lanka, Sudan, Suriname, Swaziland, Sweden, Switzerland, Syria, Thailand, the Republic of Macedonia, Timor-Leste, Trinidad and Tobago, Tunisia, Turkey, United Arab Emirates, United Kingdom, United Republic of Tanzania, Uruguay, Venezuela, Viet Nam, Yemen, Zambia, [and] Zimbabwe," (2) Israel did not sign
. So they obviously realize this applies to their situation.
2. http://en.wikipedia.org/wiki/Declaratio ... d_adoption
"Reasonable – that is, human – men will always be capable of compromise, but men who have dehumanized themselves by becoming the blind worshipers of an idea or an ideal are fanatics whose devotion to abstractions makes them the enemies of life."
-- Alan Watts, "The Way of Zen"