I didn't look up everyone on the speakers list for this "retreat", but while some of the speakers seem to be somewhere within the general remit of vaguely sensible -

Sh. Kamal el Mekki – Why the Scholars need to be used to fight Extremism -
 http://wannabescholar.wordpress.com/2009/02/24/sh-kamal-el-mekki-why-the-scholars-need-to-be-used-to-fight-extremism/

One has certainly been considered a serious terrorist in the past -
 http://articles.chicagotribune.com/2012-11-07/news/chi-bridgeview-man-taken-off-terrorist-list-20121107_1_bridgeview-man-terrorist-list-support-hamas-extremists

Another is an absolute extremist / racist / sectarian scumbag, eg -
 http://en.wikipedia.org/wiki/Haitham_al-Haddad

>> EDL would be baying for blood. Apparently, it's alright when it's the other way round though. It seems they are only in favour of their own freedom of speech but want to silence others.

Apparently, it's alright then its the other way around too. I saw recently that the anti-fasc were trying to prevent some events that the EDL organised. With anti-fasc, it seems they are only in favour of their own freedom of speech but want to silence others.

The title suggest "threatened" giving the feel that it is violence.
Whereas the article's body says "threatens to hold a demonstration"

Perhaps a more accurate title would be:
"EDL to hold counter demonstration against Muslim conference in Nottingham"

As the thousands of Palestinians who have suffered Israel's policy of 'Administrative Detention' could testify doing time in an Israeli jail does not necessarily signify criminality, nor does the U.S's government's mirroring of Israeli policy with regard to Palestinian's. From the article you link to ... "Salah was classified a “specially designated terrorist” by the U.S. Treasury Department in 1995 while he was in an Israeli prison on charges of providing support to Hamas.

He later pleaded guilty to the charges – but only after 55 days of intense interrogation, sleep deprivation and physical abuse, according to his attorneys. After five years in prison in Israel, Salah returned to the United States, where federal prosecutors in Chicago eventually brought criminal charges against him.", the article goes on to point out that the charges were subsequently dropped when he made a legal challenge. If he's a US resident who is also Palestinian and has been given permission to fly here by the US i'd say its a fairly safe bet the man is pretty moderate in his views...

The tiny Wikipedia entry you link to for the other speaker refers to a comment he allegedly made over a decade ago, there is no other information in the entry, it's an utterly reprehensible vile remark if true ( it appears he denied it at the time) but surely in the decade which has passed since then he must have given some other indication of holding such a view and indeed equally odious positions?? .... is that all you've got??

i dont understand a word you just wrote