At this link you can download spreadsheets with either the list of the names of all the tables that can be downloaded from the American Community Survey and a list of all of the columns of all the tables (shells) that can be downloaded. This can be a faster way to find out if the specific data you want to see disaggregated is available, rather than using the data portal.
Alphabetical listing of interactive tools for viewing selected data from various census products including the Census Flows Mapper which visualizes inter-county migration and the QWI explorer which disaggregates state employment trends.
The Census Public Information Office exists to support journalists reporting information from the Census. You can contact them at pio@census.gov or (301) 763-3030.