Who Could Senator Ben Bruce Be Refering to?

In a twitter message on the 27th of January 2018, Senator Ben Murray Bruce twitted a message that captured the attention of different Nigerians who argued excessively while commenting on the message, which had more 2500 retweets and over 3500 likes. This is what the Senator said; "Use that time, energy and money to monitor killer herdsmen and not Nigerians whose social media ‘hate speech’ brought you to power! If you want to know the person who has made the most hate speeches, then buy a mirror. We remember the hateful things you said". Who could he be referring to and what is you take on what the Senator said.

See twitter Message and some of the comments below: