Cracked bones, humiliation, sexual assault: Pro-Palestinian activists recounted the abuse they say they suffered from Israeli authorities for taking part in a Gaza-bound aid flotilla last month, which has sparked multiple investigations and international outcry. France, Italy and Australia have launched probes into the allegations of abuse -- which Israeli authorities deny -- after more than 430 activists from around the world were detained during the latest attempt by an aid flotilla to break the blockade of the war-battered Gaza Strip.