Opposition to the construction and expansion of mosques and community centers for Muslims in the United States has been documented since the 1980s. The growth of the Muslim community in the U.S. and the emergence of more prominent and purpose-built dedicated places of worship made new mosques more susceptible to opposition. Since the 1980s and through to the present, mosques across the U.S. face anti-mosque activity, including arson, vandalism, break-ins, and hate activity. According to research, the last decade saw the highest levels of opposition to mosques and more than a quarter of mosques faced opposition to construction or expansion. Join ISPU as we share new research that offers recommendations and resources to understand, preempt, and challenge opposition to mosque and Islamic center construction and expansion.