Evangelizing can refer to an attitude of 'I'm right' and I don't care what you think.
As a side note, can we keep in mind that the word is also associated with a certain brand of Protestantism? When the British government announced that slavery is immoral and the British navy would be attending to bringing it to an end, this was the work of English evangelists.
Their drive to 'spread the good news' led them to identify black people in the Caribbean as humans who needed to be exposed to Christianity. These slaves had not previously been looked at as human, but as units of production.
I was talking to a Southern Baptist Chaplain one day. I was interested in whether he really believed in Hell. When he realized that I wasn't arguing: that I was in earnest, he stumbled a bit, and then told me what evangelism is: he held his hands together like a cup and said: it's about loving another person. I thought, oh... he's a holy man... surprise!