In CrimeFragment.java delete unused import of TextView
In CrimeActivity.java change from using PlaceholderFragment to CrimeFragment.

Delete PlaceholderFragment.
Implement CrimeFragment.OnFragmentInteractionListener by adding required method onFragmentInteraction()

In fragment_crime.xml change context from using CrimeActivity$PlaceholderFragment to CrimeFragment.
TODO: Check if tools:context still is needed.