You could, until mozilla decided to drop support for extensions that made this possible that is. Alternatively there is waterfox + ublock origins. Waterfox is

You could, until mozilla decided to drop support for extensions that made this possible that is. Alternatively there is waterfox + ublock origins. Waterfox is firefox without the mozilla crap: Disabled Encrypted Media Extensions (EME) Disabled Web Runtime (deprecated as of 2015) Removed Pocket Removed Telemetry Removed data collection Removed startup profiling Allow running of all 64-Bit NPAPI plugins Allow running of unsigned extensions Removal of Sponsored Tiles on New Tab Page Addition of Duplicate Tab option Locale selector in about:preferences > General