WP:CITELEAD 

I've challenged the unsourced or seemingly unsourced material in the lead repeatedly.  Citations of material has not been resolved to my satisfaction. Please follow WP:Proveit and WP:CITELEAD since this is a controversial subject which leave little leeway and I personally want every statement in the entry to be properly sourced and cited. 

WP:Proveit Unverified statements are not acceptable on a main page, may be challenged and should be removed if they fail verification. If you want it to remain in the entry, then "the burden of evidence lies with the editor who adds or restores the material, and is satisfied by providing a reliable source that directly supports the material."

If you put it there, or removed a  tag and it is not perfect or has words, ideas or meanings that do not appear in the cited source, you own it.  Please properly cite it.  Consider it challenged.  It is impossible to determine the source without the citation  If you believe there are multiple sources that say something, add one of them. 

WP:CITELEAD The lead must conform to verifiability and other policies. The verifiability policy advises that material that is challenged or likely to be challenged, and quotations, should be supported by an inline citation. ...The necessity for citations in a lead should be determined on a case-by-case basis by editorial consensus. Complex, current, or controversial subjects may require many citations; others, few or none. The presence of citations in the introduction is neither required in every article nor prohibited in any article...