Ключевые слова: anniversary, audience, belgian, belgian flag, belgium, belgium flag, celebrate, celebration, citizen, colorful, community, concept, crowd, different, diversity, event, festive, flag, gathering, group, happy, human, illustration, large, movement, multicultural, people, person, politics, population, protest, protester, protesting, public, rally, red, social, society, spectators, stand, strike, team, together, unite, white, work,