Whats your experience of 'Radfems'? and are they really destroying feminism?

Lately, I've found myself more and more defending feminism, or being told that if I identify as a feminist then I must be a raging misandrist and a female supremacist. I've gotten comments before such as:

"*Modern feminism is an inherently sexist institution. If a woman wants to fight for equality then she should reject feminism and endorse egalitarian principles instead. Feminism poisons everything.*"

It seems everyone I come into discussion with online has a completely different idea of feminism to me. It's mostly those *against* feminism, who seem to feel they are certain what exactly it is. Some people will say "..but those are the radical feminists" only to be told that by not condemning the views of extremists, every feminist is condoning them.

What's bothering me, is where *are* these extremists? The 'Radfems' we hear so much about. From best I can figure - Tumblr, or the occasional Facebook user. They seem to only pop up when an MRs advocate catches wind of it and holds it up as an example of how damaging feminism is.

Lots of the posts referring to female supremacy are simply spoilt young girls who are clueless about politics and social movements, and expect someone to buy them drinks and dinner. Others are jokes in poor taste. Lately images have been circulated of women drinking out of mugs labelled 'male tears'.

We've also seen pages circulating lately such as women saying why [they don't need feminism](http://www.buzzfeed.com/rossalynwarren/i-do-not-think-it-means-what-you-think-it-means). It caused a lot of people to agree that these women just 'don't understand feminism'. But what is happening when such horrific messages are being associated with a belief system thats supposed to be about equality? Women are now afraid to call themselves a feminist and being asked if you are one feels like an accusation.

So I'm sort of asking people to open up discussion and talking about how 'radfems' have affected your lives. have you met some? interacted with them? have you been accused of being one? and has it always been like this?