Another factor that causes variations in the correlation between the media and public agenda is whether an issue is "obtrusive" or "unobtrusive"; i.e., whether it has a high or low issue threshold. Obtrusive or issues with low threshold are generally the ones that affect nearly everyone and with which we can have some kind of personal experience (e.g. citywide crime or increases in gasoline prices). Because of their link to personal concerns, these issues almost compel attention from political elites as well as the news media. Moreover, with this type of issues the problem would be of general concern even without attention from the news media.