Yes. This was part of a two day war in Iwo Jima that killed multiple American marines. The flag was raised to show American forces had defeated the Japanese forces who fought hard and vigorously
To improve the health in my community I would emphasize the importance of prevention and nutrition. A balanced diet, no fat, a lot of fruits and vegetables will allow people to prevent many diseases. Then, a doctor visit for a regular check every year will help prevent any probable disease at early stages. A healthy community means a great place to live.
The Ku Klux Klan resurfaced in the 1920s with a deep hatred towards immigrants. The Klan if the 20s was far less focused on racial issues (a hallmark of the first Klan) and more so an a "real" and "true" America. This nativist leaning most often targeted newly arrived immigrants but also Catholics, Jews, and anti-Prohibitioners - people who they feared were disrupting the moral fabric of America.