President Donald Trump is expected to be joined by several of his top officials and allies Sunday in Washington, D.C. for Rededicate 250, a national prayer event hosted on the National Mall, and one Christian group is working to erect a “15-foot-tall” surprise for the president in protest.Organized by Freedom250, a Trump-aligned group that has received millions of taxpayer dollars, the event has been decried by some critics as promoting Christian nationalism. The government watchdog group Public Citizen, for instance, condemned the event as being “less like a traditional religious event and more like a program for the Church of Trump.”Thousands are expected to attend the free event, among them being protesters, some of whom belong to Faithful America, which describes itself as a “network of progressive Christians,” per a report published Sunday by The Washington Post, which described them as a “Christian group focused on opposing religious nationalism.”Working in tandem with another group, Freedom From Religion Foundation, which the Post described as a “mostly secular group focused on church-state separation," the two groups have a surprise planned for the president, one that appears to parody the recent erection of a 22-foot-tall, $400,000 gold-plated statue of Trump at one of his golf clubs.“The organizations said they will erect a 15-foot-tall balloon of ‘a golden calf with a Trump-like visage’ a few blocks from the prayer event,” the Post reported.The nation’s capital has been host to a number of installations designed to mock the president, including the installation of satirical arcade game cabinets last week mocking Trump’s wildly unpopular war against Iran, and the erection of statues depicting Trump with convicted sex-offender Jeffrey Epstein.