Why are people so racist to Hispanics / Mexicans? Especially Some white ppl? Where the true americans.?

OK you all know that Mexicans come from many tribes and some of those tribes have spread from the west to the east, south, north and started there own customs and groups religions and etc.. we all came from the same Indians in the very beginning. (just the race of indigenous ppl ) those that went south had been d and stuff by the Spanish that had come a while after.. those that were in the region that is now considered United States Of America had really not been traced by the Spaniards.. and those Indians are considered Native Americans now... but bak then those arias like Texas and Arizona were part of Mexico and some of those Native Americans were known as Mexicans or Aztecs Mayans etc.. well if those states where still Mexico's they still would have been Mexican's for some whites or blacks... But they are not... they are our tribe friends... except we Mexicans have Spanish blood diff religion and speech. we are practically as 1 and it has been prooven... no matter what happened between the Spanish and all kinds of tribes in the U. S. and Mexico we all come from indigenous ppl of the Americas and Mexico... Im not racist. i love all kinds of ppl but what i really do think is that Mexicans aren't illegal aliens and stuff to America but we are America! WE ARE (AZTLAN) please look up Aztlan... its west and south united states and mexico b4 there where any other kinds of races. I want world peace but there are so many ppl out there that are really offending my culture countries and other things about are ppl and do not see the ancestry point of how America truly was and how it really began... i love whites and blacks and Asians... everyone! Please look up Aztlan.. maps ppl anything about that... please tell me what you guys think! thanks! Here are some Indians that came from the regions of Aztlan... that have moved and settled in different places... Achiligonan Algonquian Family Chippewa Chiwere Family Dakota Delaware Erie Foxes Hathawekela (Absentee Shawnee) Honniasontkeronon Hurons Illinois Iowa Iroquois Kaskaskia Kickapoo Housatonic Mahican Mascoutens Menominee Miami Michilimackinac Mosopelea Munsee Neutrals Noquet Oneida Ottawa Oto Peoria Pepikokia Potawatomi Sauk Shawnee Stockbridge Tionontati Winnebago Wyandot Apache ( Jicarilla) Arapaho Arikara iniboin Blackfoot Brul� Sioux Caddo Cheyenne Cherokee Chippewa Chiwere Family Comanche Dakota (Sioux) Delaware Dotame Foxes Gros Ventre Hathawekela (Absentee Shawnee) Hidatsa Hunkpapa Illinois Iowa Iroquois Kansa Kickapoo Kiowa Kiowa Apache Mdewakanton Sioux Miami Mandan Missouri Moingwena Munsee Oglala Ojibwa Omaha Osage Oto Ottawa Pawnee Peoria Ponca Potawatomi Quapaw San Arcs Sauk Santee Seneca Shawnee Sisseton Skidi Sutaio Teton Sioux Winnebago Wyandot Acolapissa Adai Alabama Anadarko Apache Apalachee Aranama Arapaho Avoyel Bayogoula Bidai Biloxi Caddo Cahinnio Chatot Cherokee Cheyenne Chickasaw Choctaw Coahuiltecan Tribes Comanche Coaque Creeks Deadose Delaware Dotame Doustioni Eyeish Foxes Guasas Hainai Hathawekela(Absentee Shawnee) Hitchiti Huma Illinois Iowa Iroquois Isleta del Sur Jicarilla Kadohadacho Kansa Karankawan Karankawan Family Kaskinampo Kichai Kickapoo Kiowa Kiowa Apache Koasati Koroa Lipan Manso Miami Michigamea Missouri Modoc Mosopelea Mugulasha Munsee Muskogee Nabedache Nacisi Nacogdoche Nanatsoho Natchez Nez Perc� Natchitoch Natchitoches Confederacy Ofo Okelousa Opelousa Osage Oto Ottawa Ouachita Pascagoula Patiri Pawnee Peoria Pinkashaw Ponca Potawatomi Pueblos Quapaw Quinipissa Sauk Seminole Seneca Shawnee Soacatino Souchitioni Taensa Tangipahoa Tawakoni Tawasa Tawehash Tonkawa Tunica Tuskegee Waco Washa Wea Wichita Wyandot Yscanis Yatasi Yazoo Yojuane Yscani Yuchi Apache Arapaho Arikara iniboin Atsina Bannock Blackfeet (Siksika) Cheyenne Chippewa Comanche Cree Crow Dakota Jicarilla Kiowa Kiowa Apache Kutenai Mandan Nez Perc� Navaho Paiute Paloos Pawnee Piegan Pueblos Salish Shoshonean Family Shoshoni Siksika (Blackfeet) Spokan Ute Yampa Apache Awatobi Chemehuevi Coahuiltec Cocopa Comanche Havasupai Hopi Jemez Keresan Family Kiowa Kiowa Apache Lipan Manso Maricopa Mohave Navaho Paiute Papago Panamint Pecos Pima Pueblo Pinal Pueblos Coyotero Piro Pueblo Quahatika Shoshonean Family Shoshoni Sobaipuri Tano Pueblo Tewa Pueblos Tigua Pueblo Tonto Ute Walapai Washo Yavapai Yuma Yuman Zu�i Ahantchuyuk Alsea Atfalati Athapascan Family Bannock Chakankni Calapooya Calapuya Cathlamet Cathlacomatup Cathlaup Cathlakaheckit Cathlamet Cathlanahquiah Cathlapotle Cathlathlalas Cayuse Chasta Chaui Chehalis Chastacosta Chasta-Soton Chaushila Chelamela Chelamela Chepenafa Chetco Chilluckkittequaw Chilliwack Chimakum C