help me write this in a simpelr way: Historically, police managers have encountered critical issues such as corruption, lack of resources, and community relations. While some of these issues persist, they also face new challenges related to immigration, use of force, technology, and policing in a multicultural society. In the past, police departments have struggled with corruption problems. This hurts the public's trust and makes law enforcement less effective. Today, even though a lot of progress has been made to fight corruption, it's still a problem in some places. In the past, police departments often struggled with a lack of resources, which could limit their ability to effectively enforce the law and serve their communities. Today, while resources remain a concern, the focus has also shifted to how resources are allocated and used. When it comes to building and maintaining positive relations with the community is has always been an issue for police managers. As of today, this issue has become even more complex because of the increasing diversity of communities and the need for culturally sensitive policing