Also referred to as advocacy groups, lobby groups, pressure groups, campaign groups or special interest groups, there is a lot of questions surrounding interest groups. Generally, they use different forms of advocacy, where they could influence the public opinion or policies and play a significant role in developing both political and social systems. Also, they diverge in influences, motives and sizes, where some of them come with wide-ranging terms in their social purposes, while others usually focus on and always respond to the issues that are experienced by many people.
Stained glass windows were once used to educate people who could not read. By looking at the painted scenes in the glass, people could learn about the stories of the Bible and religious teachings.