How do groups use lobbying to help impact the greater community around them,with a view to the common good?

How do groups use lobbying to help impact the greater community around them, with a view to the common good? Are there any specific tactics groups can employ to achieve their mission and still promote a better quality of life for all? Is it more important for a group to be sincere in pursuit of their mission, or strategic? From the two organizations presented in the video and article, what tactics can you point to as being sincere and which ones can you point to as being strategic? What are the pros and cons of being sincere, and what are the pros and cons of being strategic? Finally, each organization believes in their mission- how do they get the public or politicians to also believe in their mission, even if they are on an opposing side?