From coast to coast, thousands of people across the United States have spent their Presidents Day holiday weekend protesting Donald Trump's anti-immigration policies, and even more demonstrations are planned for Monday, NBC News reported. Protesters wielding signs in Dallas, Los Angeles and New York poured into the streets on Saturday calling for the establishment of sanctuary cities in order to end ICE raids. On Sunday, more than a thousand people rallied in New York City in support of Muslim Americans. Meanwhile, hundreds of scientists took to the streets of Boston urging Trump to recognize climate change and tackle environmental issues. Protesters held signs in the shape of telescopes and beakers that read, for example, "Scientists Serving the Common Good." The rally was taking place at the same time as the American Association for the Advancement of Science conference in the city. And on Monday, even more rallies are expected in at least 20 cities across the U.S., including in Los Angeles; New York; Washington, D.C., and Chicago.