Back in December, the European Court of Justice ruled that jailed Catalan politician Oriol Junqueras was a Member of the European Parliament and therefore had immunity from prosecution. In a democratic state under the rule of law, he would have been immediately released from prison (and compensated for his illegal detention), as his "conviction" occurred after his election. Instead, Spain continued to detain him. And now, Spain's Central Electoral Commission has declared that he is no longer an MEP, on the basis of that purported conviction.
But it doesn't stop there. The Central Electoral Commission has also purported to unseat Catalan President Quim Torra, using anti-terrorist law, and in explicit violation of Catalonia's statute of autonomy (which places that power solely in the hands of the Catalan Parliament). The Catalan Parliament isn't going to accept this, and is going to assert its rights, which will set it up for another direct collision with the Spanish judiciary.
In both cases, the message is clear: elected Catalans will not be allowed to advocate for independence, no matter what the law says. Hopefully, higher levels of the Spanish judiciary will correct these decisions. If not, the European courts will. But its just another example of Spanish repression, and another reminder that if Catalans want to be free of it, they need to be free of Spain.
(And meanwhile, Spain's parliament is debating a new government, on which the abstention of the Catalan Republican Left is vital. They've extracted promises of direct government-to-government negotiations on independence, with a public vote in Catalonia on the outcome, and they've made it clear that they will pull the plug and topple the government if those promises aren't kept. But with repression continuing, and political prisoners still in jail, its an awful risk for the ERC, and they may be punished by their voters for it).