Since the left resolutlely denies that there has been a call to violence, you may want to read this article, and check out the sourced links in the article.
http://thefederalist.com/2017/05/12/american-left-talking-violence/
Here's a nice piece from the Washington Times on antifa..
http://www.washingtontimes.com/news/2017/mar/1/liberal-left-employs-violence-to-accomplish-goals/
Protestors on CNN calling for violence:
http://www.mediaite.com/tv/people-have-to-die-anti-trump-protester-calls-for-violence-on-cnn/
The Richard Spencer incident, with imbedded tweets:
http://dailycaller.com/2017/01/23/trump-is-president-and-now-the-left-justifies-political-violence/
The Nation, which in case you didn't know, is a far left media outlet, championing the violent protests they created
https://www.thenation.com/article/if-you-appreciated-seeing-neo-nazi-richard-spencer-get-punched-thank-the-black-bloc/
The Hill, a very popular outlet, describing the call to violence
http://thehill.com/blogs/pundits-blog/national-party-news/318785-hypocrisy-and-cliches-the-democratic-party-in-2017
And finally, a full endorsement from The Huffington Post. The below paragraph is my favorite.
http://www.huffingtonpost.com/jesse-benn/sorry-liberals-a-violent-_b_10316186.html
Last, I want to briefly note the problematic nature of people with privilege condemning violent resistance to Trump as an absolute moral failing, or denying its logic. Whether you would personally engage in violent conduct matters little to your ability to understand where it comes from. Some people have the privilege to consider the implications of Trump’s rise in the abstract and negotiate which means are necessary. That’s not true for everyone. And when those who hold that privilege dismiss the potential validity or logic of violent resistance, it’s effectively an effort to dictate the rules under which oppressed peoples respond to existential threats, and to silence forms of resistance disagreeable to privileged sensibilities. Don’t be that liberal.
If you want me to post some more proof, just say the word.