Write an article that serves as a comprehensive guide to Fourth of July celebrations in San Diego County for 2025, highlighting key events such as fireworks shows, parades, and festivals. Incorporate a brief overview of the history and significance of Independence Day celebrations in the U.S., explaining how these events reflect national values and culture. Include insights on how local communities come together to honor this holiday, making it a time for unity and commemoration. Provide practical information for readers, such as dates, locations, and tips for attending these events. Conclude by encouraging readers to participate in their community’s celebrations and embrace the spirit of the holiday.