Demand Grandparents Rights, NOW!!

I believe grandparents should have rights to visitation because so much child abuse is going on with parents and stepparents abusing these children. Its not just physical but mental abuse that grandparents are seeing and we demand an immediate response. We care, love and want to see our grandchildren but when the parent or stepparent says we can not see them, how are we to help them? We can call the police and have a wellness check done on them but the parent will threaten the children to not tell so the children will say everything is good! My grandchildren, right now are not allowed to see me. I know there was child abuse in their home before because I had them for 6 months in my home for abuse and neglect and went through total hell because of Child Protective Services! I can't check on them now because their parents won't let me see them! My oldest granddaughter ( in this home) went to the principal and told of abuse and days later Child Protective Services came out and found nothing. Again, the parents threatening the children so the children recanted their cries! I'm crushed! Too many children are living a nightmare that most of us wouldn't put our animals through! Please help me!!