Use "declare oneself" in a sentence

1. These days it's become increasingly popular to declare oneself "Antiracist", but truth be told many fall far short of the true meaning of the term

2. President have been reduced in Representative Green’s mind to the high crime and misdemeanor of having the Affrontery to declare oneself to have the ambition to seek the office.

3. I wish to repeat what I wrote in my Message for January It is a profanation of religion to declare oneself a terrorist in the name of God, to do violence to others in his name.