How Should We Deal With Loud and Hurtful People?

Has Christianity effectively been ruined for others by Christians not following many of Christ’s teachings them(our)selves but brutally attacking others for doing the same?  I understand that there are many Christians who don’t do this, and that’s great.  But I think the problem is that the Christians that do purposely seek attention while doing it(in their mind they think it is a good thing…I guess).  Should we be seeking attention and disown these actions in response?

I feel like our actions/speech should be much harsher for Christians doing that rather than for someone breaking Christ’s example.